Adam and Bryan have some stickers.
When Adam gives Bryan some stickers,
Bryan's stickers is tripled.
In the end, both have 30 stickers each.
- How many stickers does Bryan have at first?
- How many stickers does Adam have at first?
|
Adam |
Bryan |
Before |
2 u + 30 |
1 u |
Change |
- 2 u |
+ 2 u |
After |
30 |
3 u = 30 |
(a)
To triple the number of stickers that Bryan has
= 3 x 1 u
= 3 u
3 u = 30
1 u = 30 ÷ 3 = 10
Number of stickers that Bryan has at first
= 1 u
= 10
(b)
Number of stickers that Adam has at first
= 2 u + 30
= 2 x 10 + 30
= 20 + 30
= 50
Answer(s): (a) 10; (b) 50