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@abrakadabra • Nov 21, 2010
Answer should be: c)150
As per the data,
40/100 * (max. marks of paper 1) = 60
Hence, Maximum Marks for Paper 1= 60 * (40/100) = 150
@makru921-Am65Ah • Nov 21, 2010
questions like these can be easily done by back-substitution (by substituting the answers and seeing if it fits the question)
@thebigk • Nov 21, 2010
Let's look for tough questions.
@makru921-Am65Ah • Nov 21, 2010
Have a go at this - quite simple though:
Two watermelons, A and B, are on sale. Watermelon A has a circumference of 6 inches; watermelon B , 5 inches. If the price of watermelon A is 1.5 times the price of watermelon B, which watermelon is a better buy?
(Assume that the two watermelons are spheres).
(A) A
(B) B
(C) Neither
(D) Both
(E) Impossible to determine
@morningdot-6Xuj4M • Nov 21, 2010
hm again a simple one.
suppose price of watermelon B is x.
then the price of watermelon A is 1.5x.
.
Now the question is how to choose the best one among them.
To do this you have to increase the circumference and price ratio.
so the circumference and price ratio of watermelon A is 4/x and for B is 5/x.
So it's better to go with B.
@makru921-Am65Ah • Nov 21, 2010
mohit, but i have a different approach...
Let radius of A = Ra
and radius of B = Rb
Ra/Rb = circumference of A/circumference of B = 6/5
Therefore the ratio of volumes of A and B is 6^3/5^3
Price of A/Price of B should be 6^3/5^3 if they are priced fairly
Since actual Price of A/Price of B = 1.5 < 1.7 < 6^3/5^3 -> A is a better buy
What do you think?
@hirenbarbhaya-04r651 • Nov 30, 2010
for me... answer is (E) Impossible to determine
@aj-onduty-BvuwMK • Nov 30, 2010
without much calculatio and considerations, it must be the option B, but I dont know if we have to assume something! 😉
I would love to see the correct answer!
@whats-in-name-KdgM7o • Dec 1, 2010
Nine people went to a hotel. 8 people paid 12rs each of them and the ninth paid 8rs more than the average of all the nine people. The total amount paid by them was?
Ans: 117
Can Anyone explain me how?I am not getting it.
@sushant005-tyt4WK • Dec 1, 2010
hmm
Let suppose the amount paid by the ninth person be x.
and the average of all the nine people be y.
Then according to the question.
Average (y)= (12*8) + x(amount paid by ninth person)/ 9.........(i)
and also given,
X= 8+y.........(ii).
Solving (i) we get,
9y - x = 96
putting the value of (ii) we get,
9y - (8+y) = 96,
9y - 8 - y = 96,
8y = 104,
y=13,
The total average of nine people is 13
now put the value of y=13 in (ii) we get,
x = 8+y
x=8+13
x=21
So the amount paid by ninth person is x=21
Now the total amount paid = (12*8) + 21
= 96 + 21
= 117.
Am i right..
@yamini-uMEVDQ • Dec 1, 2010
quite obvious..
Let the amount paid be 9th person be x.
Then x = (( 96 + x)/9) + 8 {{average of all nine people + 8}}
Solving the equation you get x= 21 (this is the amount paid by 9th person).
Now add this with (12*8=96 --> amount paid by remaining 8).. 96+21=117
Hope you got it..
@whats-in-name-KdgM7o • Dec 2, 2010
Thanks!I got it 😀
@sachin-0wuUmc • Jan 1, 2011
@ WIN
Not so difficult.Lets do it.
Assume the average is x
Now, Total paid by 8 persons=96
Amount paid by 9th person = 8+x
Now, (96+8+x)/9=x --------------------------->{ as the avg is x }
solving for x, -> x=13
So total amount paid is 13*9=117
Or
Total = 96+8+13=117
@freak16-XgiLj6 • Jan 1, 2011
Two watermelons, A and B, are on sale. Watermelon A has a circumference of 6 inches; watermelon B , 5 inches. If the price of watermelon A is 1.5 times the price of watermelon B, which watermelon is a better buy?
friends..
if we COMPARE BY circumferences i.e in 1 rupee i wll get the more circumference of B.
BUT if compare by volume the volume of A will be more in 1 rupees.
so i dun know how to go bout it..
plz help me out..
@sachin-0wuUmc • Jan 2, 2011
@ freak16
I think we should go by volume thing.
We actually purchase watermelon according to the weight.
We never purchase according to circumference.
Say, density be d and assume same for both.
Then,
Ratio of Volume_A:Volume_B = 216/125
Volume_A : Volume_B=1.7 (approx)
=>
Mass_A : Mass_B = 1.7 (density gets canceled out)
Now,
Price_A : Price_B = 1.5
According to me, Watermelon A is a better buy.
Correct me, if i am wrong.
@freak16-XgiLj6 • Jan 2, 2011
I agreed.. YOU ROCK BLUNDER BOy..
HATS OFF TO YOU...
@rgc437-at-gmailcom-iBbZhR • Jan 2, 2011
ans is 150
@shreyasm89-jGobVm • Jan 2, 2011
Even I had the same approach & I'm pretty sure we both are right!
makru921Have a go at this - quite simple though:
Two watermelons, A and B, are on sale. Watermelon A has a circumference of 6 inches; watermelon B , 5 inches. If the price of watermelon A is 1.5 times the price of watermelon B, which watermelon is a better buy?
(Assume that the two watermelons are spheres).
(A) A
(B) B
(C) Neither
(D) Both
(E) Impossible to determine
@antivirus-bryXhL • Jan 18, 2011
hi
ans is simple...
let us assume average of all the nine people is x.
and average of 8 people is (12*8)/8 = 96
hence
x=(96+(x+8))/9
x=(104+x)/9
9x=104+x
8x=104
x=13
now, ninth paid 8rs more than the average means (x+8)= 21
total amt = 96+21
=117
@jishnu-gupta-UNpHpS • Jan 19, 2011
Ans is 150 as simpl as dat.......😛
@ishan-nohePN • Jan 30, 2011
Yes answer is 150.
Its simple.Same explanation as everyone
@arp-8yytsY • Feb 1, 2011
do (((12*8)+(x+8))/9)=x
get x and total is 96+x+8..
ans come.
@jishnu-gupta-UNpHpS • Feb 5, 2011
Bz d good buy .......
@shamily-JA1dG0 • Feb 15, 2011
maximum mark is 150 is it right
