Fill in the blanks.
The ratio of Bryan's stickers to Adam's stickers is 9 : 8.
After Adam gives 45 stickers away,
The ratio of Bryan's stickers to Adam's stickers becomes 4 : 3.
- 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 |
9 x 4 = 36 u |
8 x 4 = 32 u |
Change |
|
- 45 |
After |
4 x 9 = 36 u |
3 x 9 = 27 u |
(a)
Change ratio into units.
The number of stickers that Adam (1) has remains unchanged.
(b)
LCM of 9 and 4 = 36
Number of stickers that Bryan has = 36 u
(c)
Change in the number of stickers that Adam has
= 32 u - 27 u
= 5 u
(d)
Number of stickers that Adam gives away = 45
5 u = 45
1 u = 45 ÷ 5 = 9
Answer(s): (a) 1; (b) 36; (c) 5; (d) 9