There are 3 brothers Adam Ben and Callum Callum is 3/8 of adams age Ben is 4/5 of Adams age given that Callum is 2 years younger than Ben find Adams age

Let x = Adam's age.

Callum is 3/8 of Adam's age.

Therefore Callum's age is (3/8) x.

Ben is 4/5 of Adam's age.

Therefore Ben's age is (4/5) x.

Callum is 2 years younger than Ben, therefore

(3/8) x = (4/5) x - 2

Multiply through by 40.

15x = 32x - 80

-17x = - 80

x = 4.706

Adam's age is 4 years, 0.706*12 months = 4 years, 8.5 months

Answer: 4 years, 8.5 months