Fill in the blanks.
The ratio of Adam's stickers to Bryan's stickers is 4 : 5.
After Adam gives 75 stickers away,
The ratio of Adam's stickers to Bryan's stickers becomes 1 : 2.
- Whose number of stickers has not 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 = _____
|
Adam |
Bryan |
Before |
4 x 2 = 8 u |
5 x 2 = 10 u |
Change |
- 75 |
|
After |
1 x 5 = 5 u |
2 x 5 = 10 u |
(a)
Change ratio into units.
The number of stickers that Bryan (2) 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 = 75
3 u = 75
1 u = 75 ÷ 3 = 25
Answer(s): (a) 2; (b) 10; (c) 3; (d) 25