Fill in the blanks.
Bryan is 39 years old and
Adam is 3 years old.
- Difference in their age now = _____
- Difference in their age when Bryan is five times the age of Adam = _____ u
- In how many years' time will Bryan be five times the age of Adam?
- How old will Bryan be when he will be five times the age of Adam?
|
Bryan |
Adam |
Difference |
Before |
39 |
3 |
36 |
Change |
+ ? |
+ ? |
|
After |
5 u |
1 u |
4 u |
(a)
Change X times into units.
Difference in their age
= 39 - 3
= 36
(b)
Difference in the age when Bryan is five times the age of Adam
= 5 u - 1 u
= 4 u
(c)
4 u = 36
1 u = 36 ÷ 4 = 9
Number of years' time when Bryan will be five times the age of Adam
= 1 u - 3
= 9 - 3
= 6
(d)
Bryan's age when he will be five times the age of Adam
= 5 u
= 5 x 9
= 45
Answer(s): (a) 36; (b) 4; (c) 6; (d) 45