PSLE Charlie, Peter and Tommy had 513 stickers altogether. Charlie gave
320 of his stickers to Peter and
25 of his stickers to Tommy. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Peter and Tommy at first?
|
Charlie |
Peter |
Tommy |
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 Charlie, Peter and Tommy in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that Charlie had left
= 1 -
320 -
25 = 1 -
320 -
820 =
920 Total number of stickers
= 3 x 9 u
= 27 u
27 u = 513
1 u = 513 ÷ 27 = 19
Difference in the number of stickers between Peter and Tommy at first
= 6 u - 1 u
= 5 u
= 5 x 19
= 95
Answer(s): 95