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