PSLE Zeph, Paul and Tom had 378 stickers altogether. Zeph gave
320 of his stickers to Paul and
25 of his stickers to Tom. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Paul and Tom at first?
|
Zeph |
Paul |
Tom |
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, Paul and Tom 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 = 378
1 u = 378 ÷ 27 = 14
Difference in the number of stickers between Paul and Tom at first
= 6 u - 1 u
= 5 u
= 5 x 14
= 70
Answer(s): 70