The ratio of the number of blue stickers to green stickers is 9 : 4.
After Adam buys 70 blue stickers and 80 green stickers,
there is an equal number of blue stickers and green stickers.
How many stickers does Adam have now?
|
Blue |
Green |
Before |
9 u |
4 u |
Change |
+ 70 |
+ 80 |
After |
9 u + 70 |
4 u + 80 |
The number of blue stickers and green stickers are equal in the end.
9 u + 70 = 4 u + 80
9 u - 4 u = 80 - 70
5 u = 10
1 u = 10 ÷ 5 = 2
Number of stickers that Adam has now
= 9 u + 70 + 4 u + 80
= 9 u + 4 u + 70 + 80
= 13 u + 150
= 13 x 2 + 150
= 26 + 150
= 176
Answer(s): 176