The ratio of Bryan's age to Fabian's age is 2 : 1. Next year, their average age will be 22. How old will Bryan be in 11 years' time?
|
Bryan |
Fabian |
Total |
Before |
2 u |
1 u |
42 |
Change |
+ 1 |
+ 1 |
|
After |
2 u + 1 |
1 u + 1 |
44 |
Total age of Bryan and Fabian this year
= 2 u + 1 u
= 3 u
Total age of Bryan and Fabian this year
= 2 x 22 - 1 - 1
= 44 - 2
= 42
3 u = 42
1 u = 42 ÷ 3 = 14
Bryan's age in 11 years' time
= 2 u + 11
= 2 x 14 + 11
= 28 + 11
= 39
Answer(s): 39