PSLE Wesley, Pierre and Vincent had 540 stickers altogether. Wesley gave
320 of his stickers to Pierre and
14 of his stickers to Vincent. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Pierre and Vincent at first?
|
Wesley |
Pierre |
Vincent |
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 Wesley, Pierre and Vincent in the end |
1x12 = 12 u |
1x12 = 12 u |
1x12 = 12 u |
3x12 = 36 u |
Fraction of stickers that Wesley had left
= 1 -
320 -
14 = 1 -
320 -
520 =
1220 Total number of stickers
= 3 x 12 u
= 36 u
36 u = 540
1 u = 540 ÷ 36 = 15
Difference in the number of stickers between Pierre and Vincent at first
= 9 u - 7 u
= 2 u
= 2 x 15
= 30
Answer(s): 30