The number of red and green stickers are equal.
If Adam gives away 60 red stickers and 50 green stickers,
the ratio of red stickers to green stickers becomes 3 : 5.
How many stickers are there at first?
|
Red |
Green |
Before |
3 u + 60 |
5 u + 50 |
Change |
- 60 |
- 50 |
After |
3 u |
5 u |
The number of red and green stickers is the same at first.
3 u + 60 = 5 u + 50
5 u - 3 u = 60 - 50
2 u = 10
1 u = 10 ÷ 2 = 5
Number of stickers that Adam has at first
= 3 u + 60 + 5 u + 50
= 3 u + 5 u + 60 + 50
= 8 u + 110
= 8 x 5 + 110
= 40 + 110
= 150
Answer(s): 150