PSLE Michael, Andy and Glen had 405 stickers altogether. Michael gave
320 of his stickers to Andy and
25 of his stickers to Glen. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Andy and Glen at first?
|
Michael |
Andy |
Glen |
Total |
Before |
20 u |
6 u |
1 u |
27 u |
Change 1 |
- 3 u |
+ 3 u |
|
|
Change 2 |
- 8 u |
|
+ 8 u |
|
After |
9 u |
9 u |
9 u |
27 u |
Comparing between Michael, Andy and Glen in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that Michael had left
= 1 -
320 -
25 = 1 -
320 -
820 =
920 Total number of stickers
= 3 x 9 u
= 27 u
27 u = 405
1 u = 405 ÷ 27 = 15
Difference in the number of stickers between Andy and Glen at first
= 6 u - 1 u
= 5 u
= 5 x 15
= 75
Answer(s): 75