Bryan has 700 stickers.
Adam has 300 stickers.
Adam receives some stickers from Bryan.
Now, Bryan has 200 more stickers than Adam.
- How many stickers does Bryan have in the end?
- How many stickers does Adam have in the end?
- How many stickers does Bryan give to Adam?
|
Bryan |
Adam |
Total |
Before |
700 |
300 |
1000 |
Change |
- ? |
+ ? |
|
After |
1 u + 200 |
1 u |
2 u + 200 |
(a)
At first
Number of stickers that Bryan has = 700
Number of stickers that Adam has = 300
Total number of stickers = 700 + 300 = 1000
In the end
Number of stickers that Bryan has = 1 u + 200
Number of stickers that Adam has = 1 u
Total number of stickers
= 1 u + 1 u + 200
= 2 u + 200
The total number of stickers at first and in the end remains unchanged.
Total number of stickers in the end = Total number of stickers at first
2 u + 200 = 1000
2 u = 1000 - 200 = 800
1 u = 800 ÷ 2 = 400
Number of stickers that Bryan in the end
= 1 u + 200
= 400 + 200
= 600
(b)
Number of stickers that Adam has in the end
= 1 u
= 400
(c)
Number of stickers that Bryan gives to Adam
= 400 - 300
= 100
Answer(s): (a) 600; (b) 400; (c) 100