Adam and Bryan have 490 stickers.
After Adam gives Bryan 49 stickers,
Adam has 200 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 + 249 |
1 u - 49 |
Change |
- 49 |
+ 49 |
After |
1 u + 200 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 200
= 2 u + 200
2 u + 200 = 490
2 u = 490 - 200
2 u = 290
1 u = 290 ÷ 2 = 145
Number of stickers that Adam has at first
= 1 u + 249
= 145 + 249
= 394
(b)
Number of stickers that Bryan has in the end
= 1 u
= 145
Answer(s): (a) 394; (b) 145