Perry had
25 the number of stickers that Vincent had at first. After Vincent gave Perry 70 of his stickers, Perry had
45 the number of stickers that Vincent had. How many stickers did Perry have at first?
|
Perry |
Vincent |
Total |
Before |
2x9 = 18 u |
5x9 = 45 u |
7x9 = 63 u |
Change |
+ 10 u |
- 10 u |
|
After |
4x7 = 28 u |
5x7 = 35 u |
9x7 = 63 u |
The total number of stickers that Perry and Vincent had at first and in the end remains unchanged. Make the total number of stickers the same. LCM of 7 and 9 is 63.
Number of stickers that Vincent gave Perry
= 28 u - 18 u
= 10 u
10 u = 70
1 u = 70 ÷ 10 = 7
Number of stickers that Perry had at first
= 18 u
= 18 x 7
= 126
Answer(s): 126