The ratio of Jeremy's age to Henry's age is 3 : 2. Last year, their average age was 24. How old will Henry be in 10 years' time?
| |
Jeremy |
Henry |
Total |
| Before |
3 u - 1 |
2 u - 1 |
48 |
| Change |
+ 1 |
+ 1 |
|
| After |
3 u |
2 u |
50 |
Total age of Jeremy and Henry this year
= 3 u + 2 u
= 5 u
Total age of Jeremy and Henry this year
= 2 x 24 + 1 + 1
= 48 + 2
= 50
5 u = 50
1 u = 50 ÷ 5 = 10
Henry's age in 10 years' time
= 2 u + 10
= 2 x 10 + 10
= 20 + 10
= 30
Answer(s): 30
