The ratio of the number of green stickers to red stickers is 8 : 3.
After Adam gives away 60 green stickers and 10 red stickers,
there is an equal number of green stickers and red stickers.
How many stickers does Adam have now?
|
Green |
Red |
Before |
8 u |
3 u |
Change |
- 60 |
- 10 |
After |
8 u - 60 |
3 u - 10 |
The number of green stickers and red stickers in the end is the same.
8 u - 60 = 3 u - 10
8 u - 3 u = 60 - 10
5 u = 50
1 u = 50 ÷ 5 = 10
Number of stickers that Adam has now
= 8 u - 60 + 3 u - 10
= 8 u + 3 u - 60 - 10
= 11 u - 70
= 11 x 10 - 70
= 110 - 70
= 40
Answer(s): 40