PSLE Luke, Simon and Pierre had 378 stickers altogether. Luke gave
320 of his stickers to Simon and
25 of his stickers to Pierre. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Simon and Pierre at first?
|
Luke |
Simon |
Pierre |
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 Luke, Simon and Pierre in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that Luke 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 Simon and Pierre at first
= 6 u - 1 u
= 5 u
= 5 x 14
= 70
Answer(s): 70