The ratio of the number of green stickers to blue stickers is 8 : 3.
After Adam buys another 28 green stickers and 28 blue stickers,
the ratio of the number of green stickers to blue stickers is 2 : 1.
How many stickers does Adam have now?
|
Green |
Blue |
Difference |
Before |
8 x 1 = 8 u |
3 x 1 = 3 u |
5 x 1 = 5 u |
Change |
+ 28 |
+ 28 |
|
After |
2 x 5 = 10 u |
1 x 5 = 5 u |
1 x 5 = 5 u |
The difference in the number of green stickers and blue stickers is the same.
Make the difference in the number of green stickers and blue stickers the same using the LCM of 5 and 1.
LCM of 5 and 1 = 5
Number of green stickers that Adam buys
= 10 u - 8 u
= 2 u
2 u = 28
1 u = 28 ÷ 2 = 14
Number of stickers that Adam has now
= 10 u + 5 u
= 15 u
= 15 x 14
= 210
Answer(s): 210