PSLE Michael, Riordan and Asher had 504 stickers altogether. Michael gave
320 of his stickers to Riordan and
14 of his stickers to Asher. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Riordan and Asher at first?
|
Michael |
Riordan |
Asher |
Total |
Before |
20 u |
9 u |
7 u |
36 u |
Change 1 |
- 3 u |
+ 3 u |
|
|
Change 2 |
- 5 u |
|
+ 5 u |
|
After |
12 u |
12 u |
12 u |
36 u |
Comparing between Michael, Riordan and Asher in the end |
1x12 = 12 u |
1x12 = 12 u |
1x12 = 12 u |
3x12 = 36 u |
Fraction of stickers that Michael had left
= 1 -
320 -
14 = 1 -
320 -
520 =
1220 Total number of stickers
= 3 x 12 u
= 36 u
36 u = 504
1 u = 504 ÷ 36 = 14
Difference in the number of stickers between Riordan and Asher at first
= 9 u - 7 u
= 2 u
= 2 x 14
= 28
Answer(s): 28