PSLE Liam, Elijah and Peter had 576 stickers altogether. Liam gave
320 of his stickers to Elijah and
14 of his stickers to Peter. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Elijah and Peter at first?
|
Liam |
Elijah |
Peter |
Total |
Before |
20 u |
9 u |
7 u |
36 u |
Change 1 |
- 3 u |
+ 3 u |
|
|
Change 2 |
- 5 u |
|
+ 5 u |
|
After |
12 u |
12 u |
12 u |
36 u |
Comparing between Liam, Elijah and Peter in the end |
1x12 = 12 u |
1x12 = 12 u |
1x12 = 12 u |
3x12 = 36 u |
Fraction of stickers that Liam had left
= 1 -
320 -
14 = 1 -
320 -
520 =
1220 Total number of stickers
= 3 x 12 u
= 36 u
36 u = 576
1 u = 576 ÷ 36 = 16
Difference in the number of stickers between Elijah and Peter at first
= 9 u - 7 u
= 2 u
= 2 x 16
= 32
Answer(s): 32