The ratio of Ryan's age to Howard's age is 5 : 1. Last year, their average age was 11. How old will Howard be in 12 years' time?
| |
Ryan |
Howard |
Total |
| Before |
5 u - 1 |
1 u - 1 |
22 |
| Change |
+ 1 |
+ 1 |
|
| After |
5 u |
1 u |
24 |
Total age of Ryan and Howard this year
= 5 u + 1 u
= 6 u
Total age of Ryan and Howard this year
= 2 x 11 + 1 + 1
= 22 + 2
= 24
6 u = 24
1 u = 24 ÷ 6 = 4
Howard's age in 12 years' time
= 1 u + 12
= 1 x 4 + 12
= 4 + 12
= 16
Answer(s): 16
