Adam is 37 years old.
Bryan is 5 years old.
In a few years' time, Adam will be 5 times as old as Bryan.
- In how many years' time will Adam be 5 times as old as Bryan?
- How old will Adam be by that time?
|
Adam |
Bryan |
Difference |
Before |
37 |
5 |
32 |
Change |
+ ? |
+ ? |
|
After |
5 u |
1 u |
4 u |
(a)
For Adam to be 5 times as old as Bryan,
Bryan's age = 1 u
Adam's age = 5 u
Difference in their age
= 5 u - 1 u
= 4 u
Age difference between Adam and Bryan
= 37 - 5
= 32
4 u = 32
1 u = 32 ÷ 4 = 8
Number of years' time when Adam will be 5 times as old as Bryan
= 8 - 5
= 3
(b)
Adam's age in 3 years' time
= 5 u
= 5 x 8
= 40
Answer(s): (a) 3; (b) 40