Adam and Bryan have 410 stickers.
After Adam gives Bryan 41 stickers,
Adam has 20 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 + 61 |
1 u - 41 |
Change |
- 41 |
+ 41 |
After |
1 u + 20 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 20
= 2 u + 20
2 u + 20 = 410
2 u = 410 - 20
2 u = 390
1 u = 390 ÷ 2 = 195
Number of stickers that Adam has at first
= 1 u + 61
= 195 + 61
= 256
(b)
Number of stickers that Bryan has in the end
= 1 u
= 195
Answer(s): (a) 256; (b) 195