Question 1112481
john is 5 years younger than robert. If the sum of their ages in 8 years time is 37, find john's age in 3 years time?

let robert's age be x
john's age is x-5 years

after 8 years Robert will be x+8

After 8 years John will be (x-5)+8

sum of their ages then (x+8)+(x-5)+8 =37

2x+11=37
2x=37-11
2x=26
x=13

Robert's age = 13-5=8

After 3 years Robert will be 8+3 = 11 years