Latest CTS Aptitude Question SOLUTION: Q. The quantity y varies directly as xn . For x = 3, 4, 5 and 6, the corresponding values of y are 40.5, 96, 187.5 and 324. Find n:? Option A) 2 B) 2.5 C) 3 D) 3.5

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Q. The quantity y varies directly as xn . For x = 3, 4, 5 and 6, the corresponding values of y are 40.5, 96, 187.5 and 324. Find n:?
Option
A) 2
B) 2.5
C) 3
D) 3.5

Asked In CTS Soumya Ranjan Sahoo (10 years ago)

Unsolved Read Solution (8)

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Read Solution (8) :

Vivek  (10 years ago)

10.5 13.5 16.5
DIFF= 3
Ans=3.

Is this solution Helpfull? Yes (5) | No   

SRI VIKRAM SUNDAR  (9 years ago)

Xn = Y

3n = 40.5
n= 13.5

4n = 96
n = 24

5n = 187.5
n=37.5

6n=324
n=54

for first 2 value of n = 24 - 13.5 == 10.5
for next 2 difference = 37.5 - 24 == 13.5
for next 2 difference = 54 - 37.5 == 16.5

The value difference between each is 3.

so the value of n = 3

Is this solution Helpfull? Yes (4) | No   

Manisha Tripathi  (10 years ago)

shalu singh pls explain how to solve it

Is this solution Helpfull? Yes (3) | No (2)  

shalu singh  (10 years ago)

ans:b 2.5
its easy

Is this solution Helpfull? Yes (2) | No (6)  

vimal  (10 years ago)

shalu please explain yrrr

Is this solution Helpfull? Yes | No (7)  

tarun goswami  (10 years ago)

it should be x^n.... answer is 3 :P

Is this solution Helpfull? Yes | No (3)  

DINESH C  (10 years ago)

answer is 2 because in every step it increase 0.5

Is this solution Helpfull? Yes | No (2)  

sarita  (9 years ago)

please can anyone explain it neatly m not getting it :(

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