The ratio of the number of green stickers to blue stickers is 9 : 2.
After Adam buys 10 green stickers and 80 blue stickers,
there is an equal number of green stickers and blue stickers.
How many stickers does Adam have now?
|
Green |
Blue |
Before |
9 u |
2 u |
Change |
+ 10 |
+ 80 |
After |
9 u + 10 |
2 u + 80 |
The number of green stickers and blue stickers are equal in the end.
9 u + 10 = 2 u + 80
9 u - 2 u = 80 - 10
7 u = 70
1 u = 70 ÷ 7 = 10
Number of stickers that Adam has now
= 9 u + 10 + 2 u + 80
= 9 u + 2 u + 10 + 80
= 11 u + 90
= 11 x 10 + 90
= 110 + 90
= 200
Answer(s): 200