Fill in the blanks.
The ratio of Bryan's stickers to Adam's stickers is 3 : 1.
After Adam gives 70 stickers away,
The ratio of Bryan's stickers to Adam's stickers becomes 8 : 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 |
3 x 8 = 24 u |
1 x 8 = 8 u |
Change |
|
- 70 |
After |
8 x 3 = 24 u |
1 x 3 = 3 u |
(a)
Change ratio into units.
The number of stickers that Adam (1) has remains unchanged.
(b)
LCM of 3 and 8 = 24
Number of stickers that Bryan has = 24 u
(c)
Change in the number of stickers that Adam has
= 8 u - 3 u
= 5 u
(d)
Number of stickers that Adam gives away = 70
5 u = 70
1 u = 70 ÷ 5 = 14
Answer(s): (a) 1; (b) 24; (c) 5; (d) 14