Question 217251
let jonathon age be x 
so , his brother age is x+4
in 5years time , 
jonathon -> x + 5
brother -> x + 4 + 5 = x + 9
x + 5 + x + 9 = 32
2x + 14 = 32
2x = 18
x = 9 ( jonathon's age )