Question 300702
let paul's age be x

skip's age = 3x

After 5 years their ages will be 

x+5 and 3x+5

2(x+5)= 3x+5

2x+10 = 3x+5

3x-2x=10-5

x=5 which is paul's age

skip's age is 3 times  paul's age = 15 years