PSLE Mark, Luke and Dylan had 351 stickers altogether. Mark gave
320 of his stickers to Luke and
25 of his stickers to Dylan. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Luke and Dylan at first?
|
Mark |
Luke |
Dylan |
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 Mark, Luke and Dylan in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that Mark had left
= 1 -
320 -
25 = 1 -
320 -
820 =
920 Total number of stickers
= 3 x 9 u
= 27 u
27 u = 351
1 u = 351 ÷ 27 = 13
Difference in the number of stickers between Luke and Dylan at first
= 6 u - 1 u
= 5 u
= 5 x 13
= 65
Answer(s): 65