Adam and Bryan have 480 stickers.
After Adam gives Bryan 48 stickers,
Adam has 430 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 + 478 |
1 u - 48 |
Change |
- 48 |
+ 48 |
After |
1 u + 430 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 430
= 2 u + 430
2 u + 430 = 480
2 u = 480 - 430
2 u = 50
1 u = 50 ÷ 2 = 25
Number of stickers that Adam has at first
= 1 u + 478
= 25 + 478
= 503
(b)
Number of stickers that Bryan has in the end
= 1 u
= 25
Answer(s): (a) 503; (b) 25