Fill in the blanks.
Adam is 14 years old and
Bryan is 2 years old.
- Difference in their age now = _____
- Difference in their age when Adam is five times the age of Bryan = _____ u
- In how many years' time will Adam be five times the age of Bryan?
- How old will Adam be when he will be five times the age of Bryan?
|
Adam |
Bryan |
Difference |
Before |
14 |
2 |
12 |
Change |
+ ? |
+ ? |
|
After |
5 u |
1 u |
4 u |
(a)
Change X times into units.
Difference in their age
= 14 - 2
= 12
(b)
Difference in the age when Adam is five times the age of Bryan
= 5 u - 1 u
= 4 u
(c)
4 u = 12
1 u = 12 ÷ 4 = 3
Number of years' time when Adam will be five times the age of Bryan
= 1 u - 2
= 3 - 2
= 1
(d)
Adam's age when he will be five times the age of Bryan
= 5 u
= 5 x 3
= 15
Answer(s): (a) 12; (b) 4; (c) 1; (d) 15