Adam and Bryan have 450 stickers.
After Adam gives Bryan 45 stickers,
Adam has 220 more stickers than Bryan.
- How many stickers does Adam have at first?
- How many stickers does Bryan have in the end?
|
Adam |
Bryan |
Before |
1 u + 265 |
1 u - 45 |
Change |
- 45 |
+ 45 |
After |
1 u + 220 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 220
= 2 u + 220
2 u + 220 = 450
2 u = 450 - 220
2 u = 230
1 u = 230 ÷ 2 = 115
Number of stickers that Adam has at first
= 1 u + 265
= 115 + 265
= 380
(b)
Number of stickers that Bryan has in the end
= 1 u
= 115
Answer(s): (a) 380; (b) 115