Bryan and Adam have 490 stickers.
After Bryan gives Adam 49 stickers,
Bryan has 180 more stickers than Adam.
- How many stickers does Bryan have at first?
- How many stickers does Adam have in the end?
|
Bryan |
Adam |
Before |
1 u + 229 |
1 u - 49 |
Change |
- 49 |
+ 49 |
After |
1 u + 180 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 180
= 2 u + 180
2 u + 180 = 490
2 u = 490 - 180
2 u = 310
1 u = 310 ÷ 2 = 155
Number of stickers that Bryan has at first
= 1 u + 229
= 155 + 229
= 384
(b)
Number of stickers that Adam has in the end
= 1 u
= 155
Answer(s): (a) 384; (b) 155