The number of green and blue stickers are equal.
If Adam gives away 70 green stickers and 10 blue stickers,
the ratio of green stickers to blue stickers becomes 4 : 9.
How many stickers are there at first?
|
Green |
Blue |
Before |
4 u + 70 |
9 u + 10 |
Change |
- 70 |
- 10 |
After |
4 u |
9 u |
The number of green and blue stickers is the same at first.
4 u + 70 = 9 u + 10
9 u - 4 u = 70 - 10
5 u = 60
1 u = 60 ÷ 5 = 12
Number of stickers that Adam has at first
= 4 u + 70 + 9 u + 10
= 4 u + 9 u + 70 + 10
= 13 u + 80
= 13 x 12 + 80
= 156 + 80
= 236
Answer(s): 236