Adam and Bryan have 450 stickers.
After Adam gives Bryan 45 stickers,
Adam has 140 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 + 185 |
1 u - 45 |
Change |
- 45 |
+ 45 |
After |
1 u + 140 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 140
= 2 u + 140
2 u + 140 = 450
2 u = 450 - 140
2 u = 310
1 u = 310 ÷ 2 = 155
Number of stickers that Adam has at first
= 1 u + 185
= 155 + 185
= 340
(b)
Number of stickers that Bryan has in the end
= 1 u
= 155
Answer(s): (a) 340; (b) 155