The number of blue and green stickers are equal.
If Adam gives away 70 blue stickers and 40 green stickers,
the ratio of blue stickers to green stickers becomes 5 : 8.
How many stickers are there at first?
|
Blue |
Green |
Before |
5 u + 70 |
8 u + 40 |
Change |
- 70 |
- 40 |
After |
5 u |
8 u |
The number of blue and green stickers is the same at first.
5 u + 70 = 8 u + 40
8 u - 5 u = 70 - 40
3 u = 30
1 u = 30 ÷ 3 = 10
Number of stickers that Adam has at first
= 5 u + 70 + 8 u + 40
= 5 u + 8 u + 70 + 40
= 13 u + 110
= 13 x 10 + 110
= 130 + 110
= 240
Answer(s): 240