The number of red and green stickers are equal.
If Adam gives away 60 red stickers and 10 green stickers,
the ratio of red stickers to green stickers becomes 1 : 3.
How many stickers are there at first?
|
Red |
Green |
Before |
1 u + 60 |
3 u + 10 |
Change |
- 60 |
- 10 |
After |
1 u |
3 u |
The number of red and green stickers is the same at first.
1 u + 60 = 3 u + 10
3 u - 1 u = 60 - 10
2 u = 50
1 u = 50 ÷ 2 = 25
Number of stickers that Adam has at first
= 1 u + 60 + 3 u + 10
= 1 u + 3 u + 60 + 10
= 4 u + 70
= 4 x 25 + 70
= 100 + 70
= 170
Answer(s): 170