Charlie has 4 times as many stickers as Bryan.
After Charlie gives away 63 stickers,
Bryan has 2 times as many stickers as Charlie.
- How many stickers does Bryan have?
- How many stickers does Charlie have at first?
- How many stickers do they have at first?
- How many stickers do they have in the end?
|
Charlie |
Bryan |
Before |
8 u |
2 u |
Change |
- 63 |
No change |
After |
1 u |
2 u |
(a)
The number of stickers Bryan at first and in the end remains unchanged.
Make the number of stickers that Bryan has the same using LCM of 1 and 2.
LCM of 1 and 2 = 2
Number of stickers that Charlie gives away
= 8 u - 1 u
= 7 u
7 u = 63
1 u = 63 ÷ 7 = 9
Number of stickers that Bryan has
= 2 u
= 2 x 9
= 18
(b)
Number of stickers that Charlie has at first
= 8 u
= 8 x 9
= 72
(c)
Number of stickers that they have at first
= 8 u + 2 u
= 10 u
= 10 x 9
= 90
(d)
Number of stickers that they have in the end
= 1 u + 2 u
= 3 u
= 3 x 9
= 27
Answer(s): (a) 18; (b) 72; (c) 90; (d) 27