Question

Alex is 5 yrs older than Ben. Ben is 3 yrs older than carl. And carl is half of alex's age. what's the sum of all 3 ages

Answer 1

35

Explanation:

Let the ages be a, b, and c.

a = b + 5

b = c + 3

c = a/2

a = c + 3 + 5

a = c + 8

a = a/2 + 8

a/2 = 8

a = 16

c = a/2 = 8

b = c + 3 = 11

a + b + c = 16 + 11 + 8 = 35