The ratio of the number of green stickers to red stickers is 3 : 2.
After Adam gives away another 60 green stickers and 60 red stickers,
the ratio of the number of green stickers to red stickers is 5 : 2.
How many stickers does Adam have now?
|
Green |
Red |
Difference |
Before |
3 x 3 = 9 u |
2 x 3 = 6 u |
1 x 3 = 3 u |
Change |
- 60 |
- 60 |
|
After |
5 x 1 = 5 u |
2 x 1 = 2 u |
3 x 1 = 3 u |
The difference in the number of green stickers and red stickers is the same.
Make the difference in the number of green stickers and red stickers the same using the LCM of 1 and 3.
LCM of 1 and 3 = 3
Number of green stickers that Adam gives away
= 9 u - 5 u
= 4 u
4 u = 60
1 u = 60 ÷ 4 = 15
Number of stickers that Adam has now
= 5 u + 2 u
= 7 u
= 7 x 15
= 105
Answer(s): 105