Bryan is 36 years old.
Adam is 4 years old.
In a few years' time, Bryan will be 5 times as old as Adam.
- In how many years' time will Bryan be 5 times as old as Adam?
- How old will Bryan be by that time?
|
Bryan |
Adam |
Difference |
Before |
36 |
4 |
32 |
Change |
+ ? |
+ ? |
|
After |
5 u |
1 u |
4 u |
(a)
For Bryan to be 5 times as old as Adam,
Adam's age = 1 u
Bryan's age = 5 u
Difference in their age
= 5 u - 1 u
= 4 u
Age difference between Bryan and Adam
= 36 - 4
= 32
4 u = 32
1 u = 32 ÷ 4 = 8
Number of years' time when Bryan will be 5 times as old as Adam
= 8 - 4
= 4
(b)
Bryan's age in 4 years' time
= 5 u
= 5 x 8
= 40
Answer(s): (a) 4; (b) 40