The ratio of Ethan's age to Wesley's age is 10 : 1. Last year, their average age was 21. How old will Wesley be in 2 years' time?
| |
Ethan |
Wesley |
Total |
| Before |
10 u - 1 |
1 u - 1 |
42 |
| Change |
+ 1 |
+ 1 |
|
| After |
10 u |
1 u |
44 |
Total age of Ethan and Wesley this year
= 10 u + 1 u
= 11 u
Total age of Ethan and Wesley this year
= 2 x 21 + 1 + 1
= 42 + 2
= 44
11 u = 44
1 u = 44 ÷ 11 = 4
Wesley's age in 2 years' time
= 1 u + 2
= 1 x 4 + 2
= 4 + 2
= 6
Answer(s): 6
