Bryan is 43 years old.
Adam is 7 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 |
43 |
7 |
36 |
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
= 43 - 7
= 36
4 u = 36
1 u = 36 ÷ 4 = 9
Number of years' time when Bryan will be 5 times as old as Adam
= 9 - 7
= 2
(b)
Bryan's age in 2 years' time
= 5 u
= 5 x 9
= 45
Answer(s): (a) 2; (b) 45