The ratio of Asher's age to Riordan's age is 8 : 1. Next year, their average age will be 19. How old will Asher be in 2 years' time?
| |
Asher |
Riordan |
Total |
| Before |
8 u |
1 u |
36 |
| Change |
+ 1 |
+ 1 |
|
| After |
8 u + 1 |
1 u + 1 |
38 |
Total age of Asher and Riordan this year
= 8 u + 1 u
= 9 u
Total age of Asher and Riordan this year
= 2 x 19 - 1 - 1
= 38 - 2
= 36
9 u = 36
1 u = 36 ÷ 9 = 4
Asher's age in 2 years' time
= 8 u + 2
= 8 x 4 + 2
= 32 + 2
= 34
Answer(s): 34
