Fill in the blanks.
The ratio of Bryan's stickers to Adam's stickers is 4 : 5.
After Bryan gives 65 stickers away,
The ratio of Bryan's stickers to Adam's stickers becomes 3 : 7.
- Whose number of stickers has not changed? Give the answer in number. (Eg Bryan = 1; Adam = 2)
- Number of stickers that Adam has = _____ u
- Change in the number of stickers that Bryan has = _____ u
- 1 u = _____
|
Bryan |
Adam |
Before |
4 x 7 = 28 u |
5 x 7 = 35 u |
Change |
- 65 |
|
After |
3 x 5 = 15 u |
7 x 5 = 35 u |
(a)
Change ratio into units.
The number of stickers that Adam (2) has remains unchanged.
(b)
LCM of 5 and 7 = 35
Number of stickers that Adam has = 35 u
(c)
Change in the number of stickers that Bryan has
= 28 u - 15 u
= 13 u
(d)
Number of stickers that Bryan gives away = 65
13 u = 65
1 u = 65 ÷ 13 = 5
Answer(s): (a) 2; (b) 35; (c) 13; (d) 5