Question

The ratio between the ages of two persons A and B is 2:5. If the difference between their ages is 18 years then find the age of another person C if the average age of all the persons five years hence will be 30 years?

• A. 33 years
• B. 35 years
• C. 28 years
• D. 24 years

Answer 1

Answer:

A. 33 years

Let the ratio of ages A and B be 2x and 5x 5x-2x= 18 3x=18 x= 6 years A’s age= 6*2= 12 years B’s age= 6*5= 30 years Total ages of A, B and C at present= 30*3 = 90 – 15 = 75 years Age of C= 75 - (30+12) = 33 years