The ratio of the number of blue stickers to green stickers is 8 : 3.
After Adam buys 50 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 |
8 u |
3 u |
Change |
+ 50 |
+ 80 |
After |
8 u + 50 |
3 u + 80 |
The number of blue stickers and green stickers are equal in the end.
8 u + 50 = 3 u + 80
8 u - 3 u = 80 - 50
5 u = 30
1 u = 30 ÷ 5 = 6
Number of stickers that Adam has now
= 8 u + 50 + 3 u + 80
= 8 u + 3 u + 50 + 80
= 11 u + 130
= 11 x 6 + 130
= 66 + 130
= 196
Answer(s): 196