Fill in the blanks.
Bryan is 57 years old and
Adam is 53 years old.
- Difference in their age now = _____
- Difference in their age when Bryan was thrice the age of Adam = _____ u
- In how many years' before was Bryan thrice the age of Adam?
- How old was Bryan when he was thrice the age of Adam?
|
Bryan |
Adam |
Difference |
Before |
3 u |
1 u |
2 u |
Change |
+ ? |
+ ? |
|
After |
57 |
53 |
4 |
(a)
Change X times into units.
Difference in their age now
= 57 - 53
= 4
(b)
Difference in the age when Bryan is thrice the age of Adam
= 3 u - 1 u
= 2 u
(c)
2 u = 4
1 u = 4 ÷ 2 = 2
Number of years before when Bryan was thrice the age of Adam
= 53 - 1 u
= 53 - 2
= 51
(d)
Bryan's age before when he was thrice the age of Adam
= 3 u
= 3 x 2
= 6
Answer(s): (a) 4; (b) 2; (c) 51; (d) 6