Bryan and Adam have 430 stickers.
After Bryan gives Adam 43 stickers,
Bryan has 100 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 + 143 |
1 u - 43 |
Change |
- 43 |
+ 43 |
After |
1 u + 100 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 100
= 2 u + 100
2 u + 100 = 430
2 u = 430 - 100
2 u = 330
1 u = 330 ÷ 2 = 165
Number of stickers that Bryan has at first
= 1 u + 143
= 165 + 143
= 308
(b)
Number of stickers that Adam has in the end
= 1 u
= 165
Answer(s): (a) 308; (b) 165