Average - Quantitative Aptitude (MCQ) questions for Q. 21521

Q.  Three numbers are in the ratio 4 : 5 : 6 and their average is 30 . The largest number is:
- Published on 05 May 16

a. 28
b. 32
c. 36
d. 42

ANSWER: 36
 
Let the numbers be 4x, 5x and 6x. Therefore,
(4x+5x+6x)/3 = 30
15x = 90
x = 6
Largest number = 6x = 36.

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