The ratio of Dylan's age to Gabriel's age is 5 : 1. Last year, their average age was 14. How old will Gabriel be in 5 years' time?
|
Dylan |
Gabriel |
Total |
Before |
5 u - 1 |
1 u - 1 |
28 |
Change |
+ 1 |
+ 1 |
|
After |
5 u |
1 u |
30 |
Total age of Dylan and Gabriel this year
= 5 u + 1 u
= 6 u
Total age of Dylan and Gabriel this year
= 2 x 14 + 1 + 1
= 28 + 2
= 30
6 u = 30
1 u = 30 ÷ 6 = 5
Gabriel's age in 5 years' time
= 1 u + 5
= 1 x 5 + 5
= 5 + 5
= 10
Answer(s): 10