The difference between the age of two cousins is 10 years.15 years ago,if the elder one was twice as old as the younger one,fund their present age

Answer 1

x and (x+10)

(x+10) - 15 = 2 (x-15)

x - 5 = 2 x - 30

x - 25 = 0

x = 25
x+10 = 35

Answer 2

Superb