Bryan had
25 the number of stickers that Archie had at first. After Archie gave Bryan 60 of his stickers, Bryan had
45 the number of stickers that Archie had. How many stickers did Archie have in the end?
|
Bryan |
Archie |
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 Bryan and Archie 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 Archie gave Bryan
= 28 u - 18 u
= 10 u
10 u = 60
1 u = 60 ÷ 10 = 6
Number of stickers that Archie had in the end
= 35 u
= 35 x 6
= 210
Answer(s): 210