The ratio of Cody's age to Vaidev's age is 5 : 1. Next year, their average age will be 19. How old will Cody be in 2 years' time?
|
Cody |
Vaidev |
Total |
Before |
5 u |
1 u |
36 |
Change |
+ 1 |
+ 1 |
|
After |
5 u + 1 |
1 u + 1 |
38 |
Total age of Cody and Vaidev this year
= 5 u + 1 u
= 6 u
Total age of Cody and Vaidev this year
= 2 x 19 - 1 - 1
= 38 - 2
= 36
6 u = 36
1 u = 36 ÷ 6 = 6
Cody's age in 2 years' time
= 5 u + 2
= 5 x 6 + 2
= 30 + 2
= 32
Answer(s): 32