Neha

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26 Apr 2011

**A Simple Question**

**Some Questions from TCS**

Hi everyone

Can anyone answer the simple questions.These are the questions i found in last year TCS question papers.

1.A car is filled with four and half gallons of fuel for a round trip.

Fuel is taken 1/4 more in going then coming. What is the fuel

consumed in coming up?

2.Low temperature at the night in a city is 1/3 more than 1/2 high as

higher temperature in a day. Sum of the low tem. and highest temp.

is 100 degrees. Then what is the low temp?

3. A person, who decided to go to weekened trip should not

exceed 8 hours driving in a day. Average speed of forward journey

is 40 m/h. Due to traffic in sundays, the return journey average speed

is 30 m/h. How far he can select a picnic spot?

a) 120 miles

b) between 120 and 140 miles

c) 160 miles

Neha

Branch Unspecified

12 years ago

plz do write the solutions to the above questions.

Jerry

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12 years ago

I couldn't understand this -

Let 'x' be the fuel consumed during return journey. Then (5x/4) becomes the quantity of fuel required during the forward journey.

Therefore, x + (5x/4) = 4.5

=> x = 2 is the quantity of fuel consumed while coming up.

Ans#3:

Let 'x' be the time (in hours) for forward journey & 'y' be the time (in hours) for the return journey.

=> x+y =8

If (a) were right, then total distance travelled = 120 x 2 = 240 miles.

that means 40x + 30y = 240

Solving for x & y results in x = 0 which is invalid.

Similarly try for (c). Which results into y = 0 hours.

Therefore the correct answer is option (b).

-Jerry.

p.s. post this question in Quantitative section.

a city is 1/3 more than 1/2 high asAns#1:

higher temperature

Let 'x' be the fuel consumed during return journey. Then (5x/4) becomes the quantity of fuel required during the forward journey.

Therefore, x + (5x/4) = 4.5

=> x = 2 is the quantity of fuel consumed while coming up.

Ans#3:

Let 'x' be the time (in hours) for forward journey & 'y' be the time (in hours) for the return journey.

=> x+y =8

If (a) were right, then total distance travelled = 120 x 2 = 240 miles.

that means 40x + 30y = 240

Solving for x & y results in x = 0 which is invalid.

Similarly try for (c). Which results into y = 0 hours.

Therefore the correct answer is option (b).

-Jerry.

p.s. post this question in Quantitative section.

Neha

Branch Unspecified

12 years ago

**Answers**

well Jerry, even i got my answer as 2 gallons for the first but the answer to the first question is 20 gallons.

i couldn't understand second question and answer to the third one is 120miles.

rick

Branch Unspecified

12 years ago

but the answer to the first question is 20 gallons.How can it be 20 gallons? 😒

The car has only 4.5 gallons.

I couldn't get the answer to question 3. It has to be between 120 & 140 miles.

How did you get 120?

rick

Neha

Branch Unspecified

12 years ago

yea u are rite rick the answer had to be 2gallons and the answer to third question should be (b) only.What about question 2 can anyone explain it??

sttepz

Branch Unspecified

12 years ago

**its sooooo simple**

2.Low temperature at the night in a city is 1/3 more than 1/2 high as

higher temperature in a day. Sum of the low tem. and highest temp.

is 100 degrees. Then what is the low temp?

Ans. wel d lower temp. is 40 n d higher's 60.

REASON : 40 is 1/3 more than 30 which is half of higher temp(60).

Kaustubh Katdare

Electrical

12 years ago

**my way**

I'll tell you how I did it. If you can do it that way, TCS won't be a problem 😀

1.A car is filled with four and half gallons of fuel for a round trip.Divide 4.5 into 2 & 2.5. Now 0.5 is 25% of 2 . That should give you the answer.

Fuel is taken 1/4 more in going then coming. What is the fuel

consumed in coming up?

2.Low temperature at the night in a city is 1/3 more than 1/2 high asSttepz did it the right way.

higher temperature in a day. Sum of the low tem. and highest temp.

is 100 degrees. Then what is the low temp?

3. A person, who decided to go to weekened trip should notIf I had only 20 seconds to solve this; I'd divide 8 into 4 + 4. 40x4 + 30x4 = 160+120 = 280. Which is twice of the higher limit in option (b). I can be 90% sure that answer is (b).

exceed 8 hours driving in a day. Average speed of forward journey

is 40 m/h. Due to traffic in sundays, the return journey average speed

is 30 m/h. How far he can select a picnic spot?

Well, there can be better ways. That was my approach of guessing the answer in shortest time. Accuracy rate is around 80%.

**-The Big K-**

Neha

Branch Unspecified

12 years ago

**Thanx**

Thanx Everybody who took out the precious time for this thread.

Neha

Branch Unspecified

12 years ago

**More!!**

1.a sales person multiplied a number and get the answer is 3

instead of that number divided by 3.what is the answer he actually

has to get.

2.a ship started from a port and moving with I mph and another ship

started from L and moving with H mph.at which place these two ships

meet.

3.a building with height D ft shadow upto G.A neighbour building

with what height shadow C ft is

crook

Branch Unspecified

12 years ago

**simple**

1.a sales person multiplied a number and get the answer is 3😒 Please rewrite the question or give me the options.

instead of that number divided by 3.what is the answer he actually

has to get.

2.a ship started from a port and moving with I mph and another shipAssumption: The ships are moving towards each other 😀

started from L and moving with H mph.at which place these two ships

meet.

Let' the ships meet after 't' hours. So,

t = { L / (I+H) } hrs.

Therefore, the ships meet at I x t miles from the port. Easy!

3.a building with height D ft shadow upto G.A neighbour buildingThe ratio is D:G . Assuming similar triangles (draw the figure yourself), the height with shadow C ft. should be DxC / G .

with what height shadow C ft is

**Crook**

Jerry

Branch Unspecified

12 years ago

good work crook. Neha please confirm the answers.

Anil Jain

Civil

12 years ago

Jerrygood work crook. Neha please confirm the answers.

still waiting for confirmation of answers......

😁

--Crazy

Neha

Branch Unspecified

12 years ago

**some more....**

These are some of the questions i found in IBM papers...Answers have been marked...Try them Out!!!

1.From height of 8 mts on ball fell down and each time it bounces half the

distnace back. so what will be the distance travelled ??

a.24---->Ans

b.26

c.28

d.none of above answers

2.If a person sells a product for rs141/- he suffers a loss of 6%.if he has to have a profit of 10%, at what price should he sell it?

a.200rs

b.175rs

c.210rs

d.165rs---->Ans

3.which of the following is the sum of 3 consecutive prime nos?

a.49

b.59

c.both a and b---->Ans

d.100

4.If 3 houses are to be painted,mr A can paint a house in 6 days mr B can do the same in 8 days...& mr.C in 12 days.if mr A does the work for 8 days & leaves for vacation, & mr B continues the work for the next 6 days, for how many days should mr.C work?

a.11 days

b.13 days

c.17 days---->Ans

d.None of the Given answers

5.4 thieves rob a bakery of the breadone after the other.each thief takes half of what is present ,& half a bread...if at the end 3 bread remains,what is the no of bread that

was present initiallly?

a.63

b.65

c.67

d.None of the given answers---->Ans

Neha

Branch Unspecified

12 years ago

can anybody give the solutions to 1st,3rd and 4th??

I got the answer to the 5th one as 80.

I got the answer to the 5th one as 80.

Kaustubh Katdare

Electrical

12 years ago

**solved**

Hi Neha,

Here we go -

1.From height of 8 mts on ball fell down and each time it bounces half theWell, the series which comes to my mind is -

distnace back. so what will be the distance travelled ??

8 (initial) + 2 x 4 + 2 x 2 + 2 x 1 + ...... (infinite)

Which equals : 8 + 2 ( 4+2+1+..... )

= 8 + 2 [ 4 / ( 1-0.5 ) ] (Infinite Series Sum)

= 8 + 2 [ 4 x 2 ]

= 24

Option 'a'

3.which of the following is the sum of 3 consecutive prime nos?49 = 13+17+19

a.49

b.59

c.both a and b---->Ans

d.100

59 = 17+19+23

Option 'c'

If 3 houses are to be painted,mr A can paint a house in 6 days mr B can do the same in 8 days...& mr.C in 12 days.if mr A does the work for 8 days & leaves for vacation, & mr B continues the work for the next 6 days, for how many days should mr.C work?To complete the work,

A must work for 18 Days

B for 24 Days

C for 36 Days

Suppose that total work is of 72 units, then -

A does 4 units/day

B does 3 units/day

C does 2 unites/day

Now, for the first 8 days, A does 8 x 4 = 32 units

and for next 6 days, B does 6 x 3 = 18 units.

Therefore, total work completed by A & B is 32+18 = 50 units.

Remaining work, which is 72-50 = 22 units has to be completed by C. So with 2 units per day, he will complete the work in 22/2 = 11 Days.

Option 'a'.

Please verify.

**-The Big K-**

Neha

Branch Unspecified

12 years ago

Thanx!!...well how did u take the total work to be 72units in 4th question??

Kaustubh Katdare

Electrical

12 years ago

**Guess?**

18, 24 & 36

and ...

72 😀

umm... Guess? 😉

**-The Big K-**

rick

Branch Unspecified

12 years ago

80? How?nehacan anybody give the solutions to 1st,3rd and 4th??

I got the answer to the 5th one as 80.

hey that was a great job, GOOD ADMIN

Neha

Branch Unspecified

12 years ago

i got the answer to 5th one as 89

solution:

let the breads initially present to be x.

then,

(x/2+1/2) + [1/2(x/2+1/2)]+1/2 + [1/2{1/2(x/2+1/2)+1/2}]+1/2 +

1/2[1/2{1/2{x/2+1/2)+1/2}+1/2] + 3 = x

Solving the equation,

x = 89.

wat is the sum of infinite series???

solution:

let the breads initially present to be x.

then,

(x/2+1/2) + [1/2(x/2+1/2)]+1/2 + [1/2{1/2(x/2+1/2)+1/2}]+1/2 +

1/2[1/2{1/2{x/2+1/2)+1/2}+1/2] + 3 = x

Solving the equation,

x = 89.

wat is the sum of infinite series???

Kaustubh Katdare

Electrical

12 years ago

The Sum of an Infinite Geometric Series If -1 <

*r*< 1 (or ), then the sum of the infinite geometric series**in which is the first term and**

*r*is the common ratio is given by

.

-The Big K-

.

-The Big K-

Ronan Keating

Branch Unspecified

7 years ago

the 5 th one is 64..let there be X bread..the 1st one takes 1/2 bread and X/2 bread...so REMAINING bread is (X - 1/2 - X/2) =( X/2 - 1/2)

2nd one ....................remaining bread - 1/2(remaining bread)-1/2 (X/2 - 1/2) - 1/2 - (X/4 - 1/4) =(X/4 - 3/4)

3rd one ............................................................................... (X/4 - 3/4) - 1/2 - (X/8 - 3/8) =(X/8 - 7/8)

4th one ................................................................................ (X/8 - 7/8) -1/2 - (X/16 - 7/16) =(X/16 - 15/16)

SEE there is a sequence if there is N number of thief AND that is

So if you solve the 4th EQUATION (X/16 - 15 /16) = 3 ....You will see 64 is the ans..which is very close to the options..bt none of them................

2nd one ....................remaining bread - 1/2(remaining bread)-1/2 (X/2 - 1/2) - 1/2 - (X/4 - 1/4) =(X/4 - 3/4)

3rd one ............................................................................... (X/4 - 3/4) - 1/2 - (X/8 - 3/8) =(X/8 - 7/8)

4th one ................................................................................ (X/8 - 7/8) -1/2 - (X/16 - 7/16) =(X/16 - 15/16)

SEE there is a sequence if there is N number of thief AND that is

*...............***( X / 2^N ) - ( (2^ N) -1) / ( 2^N)**So if you solve the 4th EQUATION (X/16 - 15 /16) = 3 ....You will see 64 is the ans..which is very close to the options..bt none of them................

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