The ratio of the number of blue stickers to green stickers is 8 : 1.
After Adam buys another 33 blue stickers and 33 green stickers,
the ratio of the number of blue stickers to green stickers is 7 : 5.
How many stickers does Adam have now?
|
Blue |
Green |
Difference |
Before |
8 x 2 = 16 u |
1 x 2 = 2 u |
7 x 2 = 14 u |
Change |
+ 33 |
+ 33 |
|
After |
7 x 7 = 49 u |
5 x 7 = 35 u |
2 x 7 = 14 u |
The difference in the number of blue stickers and green stickers is the same.
Make the difference in the number of blue stickers and green stickers the same using the LCM of 7 and 2.
LCM of 7 and 2 = 14
Number of blue stickers that Adam buys
= 49 u - 16 u
= 33 u
33 u = 33
1 u = 33 ÷ 33 = 1
Number of stickers that Adam has now
= 49 u + 35 u
= 84 u
= 84 x 1
= 84
Answer(s): 84