Bryan and Adam have some stickers.
When Bryan gives Adam some stickers,
Bryan's stickers is tripled.
In the end, both have 120 stickers each.
- How many stickers does Adam have at first?
- How many stickers does Bryan have at first?
|
Bryan |
Adam |
Before |
2 u + 120 |
1 u |
Change |
- 2 u |
+ 2 u |
After |
120 |
3 u = 120 |
(a)
To triple the number of stickers that Adam has
= 3 x 1 u
= 3 u
3 u = 120
1 u = 120 ÷ 3 = 40
Number of stickers that Adam has at first
= 1 u
= 40
(b)
Number of stickers that Bryan has at first
= 2 u + 120
= 2 x 40 + 120
= 80 + 120
= 200
Answer(s): (a) 40; (b) 200