Bryan and Adam have a total of 600 stickers.
Bryan gives Adam 50 stickers.
Now, Bryan has 60 more than Adam.
- How many stickers does Bryan have at first?
- How many stickers does Adam have in the end?
|
Bryan |
Adam |
Total |
Before |
1 u + 110 |
1 u - 50 |
600 |
Change |
- 50 |
+ 50 |
|
After |
1 u + 60 |
1 u |
2 u + 60 |
(a)
In the end
Number of stickers that Bryan has = 1 u + 60
Number of stickers that Adam has = 1 u
Total number of stickers = 1 u + 1 u + 60 = 2 u + 60
At first
Number of stickers that Bryan has = 1 u + 60 + 50 = 1 u + 110
Number of stickers that Adam has = 1 u - 50
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 + 60 = 600
2 u = 600 - 60
2 u = 540
1 u = 540 ÷ 2 = 270
Number of stickers that Bryan has at first
= 1 u + 110
= 270 + 110
= 380
(b)
Number of stickers that Adam has in the end
= 1 u
= 270
Answer(s): (a) 380; (b) 270