The ratio of Justin's age to Flynn's age is 4 : 1. Last year, their average age was 14. How old will Flynn be in 7 years' time?
| |
Justin |
Flynn |
Total |
| Before |
4 u - 1 |
1 u - 1 |
28 |
| Change |
+ 1 |
+ 1 |
|
| After |
4 u |
1 u |
30 |
Total age of Justin and Flynn this year
= 4 u + 1 u
= 5 u
Total age of Justin and Flynn this year
= 2 x 14 + 1 + 1
= 28 + 2
= 30
5 u = 30
1 u = 30 ÷ 5 = 6
Flynn's age in 7 years' time
= 1 u + 7
= 1 x 6 + 7
= 6 + 7
= 13
Answer(s): 13
