Adam and Bryan have 410 stickers.
After Adam gives Bryan 41 stickers,
Adam has 80 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 + 121 |
1 u - 41 |
Change |
- 41 |
+ 41 |
After |
1 u + 80 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 80
= 2 u + 80
2 u + 80 = 410
2 u = 410 - 80
2 u = 330
1 u = 330 ÷ 2 = 165
Number of stickers that Adam has at first
= 1 u + 121
= 165 + 121
= 286
(b)
Number of stickers that Bryan has in the end
= 1 u
= 165
Answer(s): (a) 286; (b) 165