The ratio of the number of green stickers to red stickers is 7 : 3.
After Adam gives away another 50 green stickers and 50 red stickers,
the ratio of the number of green stickers to red stickers is 3 : 1.
How many stickers does Adam have now?
|
Green |
Red |
Difference |
Before |
7 x 1 = 7 u |
3 x 1 = 3 u |
4 x 1 = 4 u |
Change |
- 50 |
- 50 |
|
After |
3 x 2 = 6 u |
1 x 2 = 2 u |
2 x 2 = 4 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 4 and 2.
LCM of 4 and 2 = 4
Number of green stickers that Adam gives away
= 7 u - 6 u
= 1 u
1 u = 50
Number of stickers that Adam has now
= 6 u + 2 u
= 8 u
= 8 x 50
= 400
Answer(s): 400