Adam and Bryan have 430 stickers.
After Adam gives Bryan 43 stickers,
Adam has 30 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 + 73 |
1 u - 43 |
Change |
- 43 |
+ 43 |
After |
1 u + 30 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 30
= 2 u + 30
2 u + 30 = 430
2 u = 430 - 30
2 u = 400
1 u = 400 ÷ 2 = 200
Number of stickers that Adam has at first
= 1 u + 73
= 200 + 73
= 273
(b)
Number of stickers that Bryan has in the end
= 1 u
= 200
Answer(s): (a) 273; (b) 200