PSLE Zeph, Tom and Paul had 540 stickers altogether. Zeph gave
320 of his stickers to Tom and
25 of his stickers to Paul. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Tom and Paul at first?
|
Zeph |
Tom |
Paul |
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 Zeph, Tom and Paul in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that Zeph had left
= 1 -
320 -
25 = 1 -
320 -
820 =
920 Total number of stickers
= 3 x 9 u
= 27 u
27 u = 540
1 u = 540 ÷ 27 = 20
Difference in the number of stickers between Tom and Paul at first
= 6 u - 1 u
= 5 u
= 5 x 20
= 100
Answer(s): 100