The ratio of the number of red stickers to blue stickers is 8 : 3.
After Adam buys 10 red stickers and 60 blue stickers,
there is an equal number of red stickers and blue stickers.
How many stickers does Adam have now?
|
Red |
Blue |
Before |
8 u |
3 u |
Change |
+ 10 |
+ 60 |
After |
8 u + 10 |
3 u + 60 |
The number of red stickers and blue stickers are equal in the end.
8 u + 10 = 3 u + 60
8 u - 3 u = 60 - 10
5 u = 50
1 u = 50 ÷ 5 = 10
Number of stickers that Adam has now
= 8 u + 10 + 3 u + 60
= 8 u + 3 u + 10 + 60
= 11 u + 70
= 11 x 10 + 70
= 110 + 70
= 180
Answer(s): 180