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Join this group to post and comment. Neha • Apr 2, 2006

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 • Apr 2, 2006
plz do write the solutions to the above questions. Jerry • Apr 2, 2006
I couldn't understand this -
a city is 1/3 more than 1/2 high as
higher temperature
Ans#1:
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 • Apr 2, 2006

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 • Apr 3, 2006
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 • Apr 3, 2006
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 • Apr 3, 2006
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 • Apr 4, 2006
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.
Fuel is taken 1/4 more in going then coming. What is the fuel
consumed in coming up?
Divide 4.5 into 2 & 2.5. Now 0.5 is 25% of 2 . That should give you the answer.

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?
Sttepz did it the right way.

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?
If 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).

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 • Apr 8, 2006
Thanx

Thanx Everybody who took out the precious time for this thread. Neha • Apr 9, 2006
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 • Apr 9, 2006
simple

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.
😒 Please rewrite the question or give me the options.

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.
Assumption: The ships are moving towards each other 😀
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 building
with what height shadow C ft is
The ratio is D:G . Assuming similar triangles (draw the figure yourself), the height with shadow C ft. should be DxC / G .

Crook Jerry • Apr 18, 2006 Jerry

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

--Crazy Neha • May 8, 2006
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

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

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 Neha • May 8, 2006
can anybody give the solutions to 1st,3rd and 4th??

I got the answer to the 5th one as 80. Kaustubh Katdare • May 8, 2006
solved

Hi Neha,

Here we go -
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 ??
Well, the series which comes to my mind is -
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?
a.49
b.59
c.both a and b---->Ans
d.100
49 = 13+17+19
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'.

-The Big K- Neha • May 8, 2006
Thanx!!...well how did u take the total work to be 72units in 4th question?? Kaustubh Katdare • May 8, 2006
Guess?

18, 24 & 36

and ...

72 😀

umm... Guess? 😉

-The Big K- rick • May 8, 2006
neha
can anybody give the solutions to 1st,3rd and 4th??
I got the answer to the 5th one as 80.
80? How?

hey that was a great job, GOOD ADMIN  Neha • May 9, 2006
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??? Kaustubh Katdare • May 9, 2006
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- Ronan Keating • Apr 26, 2011
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 ( 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................