Fill in the blanks.
The ratio of Bryan's stickers to Adam's stickers is 5 : 4.
After Adam gives 60 stickers away,
The ratio of Bryan's stickers to Adam's stickers becomes 2 : 1.
- Whose number of stickers has changed? Give the answer in number. (Eg Adam = 1; Bryan = 2)
- Number of stickers that Bryan has = _____ u
- Change in the number of stickers that Adam has = _____ u
- 1 u = _____
|
Bryan |
Adam |
Before |
5 x 2 = 10 u |
4 x 2 = 8 u |
Change |
|
- 60 |
After |
2 x 5 = 10 u |
1 x 5 = 5 u |
(a)
Change ratio into units.
The number of stickers that Adam (1) has remains unchanged.
(b)
LCM of 5 and 2 = 10
Number of stickers that Bryan has = 10 u
(c)
Change in the number of stickers that Adam has
= 8 u - 5 u
= 3 u
(d)
Number of stickers that Adam gives away = 60
3 u = 60
1 u = 60 ÷ 3 = 20
Answer(s): (a) 1; (b) 10; (c) 3; (d) 20