The ratio of Oscar's age to Wesley's age is 7 : 3. Last year, their average age was 24. How old will Wesley be in 4 years' time?
| |
Oscar |
Wesley |
Total |
| Before |
7 u - 1 |
3 u - 1 |
48 |
| Change |
+ 1 |
+ 1 |
|
| After |
7 u |
3 u |
50 |
Total age of Oscar and Wesley this year
= 7 u + 3 u
= 10 u
Total age of Oscar and Wesley this year
= 2 x 24 + 1 + 1
= 48 + 2
= 50
10 u = 50
1 u = 50 ÷ 10 = 5
Wesley's age in 4 years' time
= 3 u + 4
= 3 x 5 + 4
= 15 + 4
= 19
Answer(s): 19
