The ratio of the number of blue stickers to green stickers is 9 : 4.
After Adam buys 10 blue stickers and 30 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 |
+ 10 |
+ 30 |
After |
9 u + 10 |
4 u + 30 |
The number of blue stickers and green stickers are equal in the end.
9 u + 10 = 4 u + 30
9 u - 4 u = 30 - 10
5 u = 20
1 u = 20 ÷ 5 = 4
Number of stickers that Adam has now
= 9 u + 10 + 4 u + 30
= 9 u + 4 u + 10 + 30
= 13 u + 40
= 13 x 4 + 40
= 52 + 40
= 92
Answer(s): 92