Bryan has 3 times as many stickers as Charlie.
After Bryan gives away 40 stickers,
Charlie has 2 times as many stickers as Bryan.
- How many stickers does Charlie have?
- How many stickers does Bryan have at first?
- How many stickers do they have at first?
- How many stickers do they have in the end?
|
Bryan |
Charlie |
Before |
6 u |
2 u |
Change |
- 40 |
No change |
After |
1 u |
2 u |
(a)
The number of stickers Charlie at first and in the end remains unchanged.
Make the number of stickers that Charlie has the same using LCM of 1 and 2.
LCM of 1 and 2 = 2
Number of stickers that Bryan gives away
= 6 u - 1 u
= 5 u
5 u = 40
1 u = 40 ÷ 5 = 8
Number of stickers that Charlie has
= 2 u
= 2 x 8
= 16
(b)
Number of stickers that Bryan has at first
= 6 u
= 6 x 8
= 48
(c)
Number of stickers that they have at first
= 6 u + 2 u
= 8 u
= 8 x 8
= 64
(d)
Number of stickers that they have in the end
= 1 u + 2 u
= 3 u
= 3 x 8
= 24
Answer(s): (a) 16; (b) 48; (c) 64; (d) 24