The average ages of three persons are 60 years. Those ages are in the proportion of 2:4:6.what is the age of the youngest one among them?

The average ages of three persons are 60 years. Those ages are in the proportion of 2:4:6.what is the age of the youngest one among them?

A 30

B 15

C 60

D None of the above

Solution

Correct Answer: Option A

(2x+4x+6x)/3=60
2X+4x+6x = 180
12x= 180
X= 180/12=15
Youngest 2x =2(15)=30