PSLE Wesley, Ivan and John had 255 stickers altogether. Wesley gave
110 of his stickers to Ivan and
25 of his stickers to John. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Ivan and John at first?
|
Wesley |
Ivan |
John |
Total |
Before |
10 u |
4 u |
1 u |
15 u |
Change 1 |
- 1 u |
+ 1 u |
|
|
Change 2 |
- 4 u |
|
+ 4 u |
|
After |
5 u |
5 u |
5 u |
15 u |
Comparing between Wesley, Ivan and John in the end |
1x5 = 5 u |
1x5 = 5 u |
1x5 = 5 u |
3x5 = 15 u |
Fraction of stickers that Wesley had left
= 1 -
110 -
25 = 1 -
110 -
410 =
510 Total number of stickers
= 3 x 5 u
= 15 u
15 u = 255
1 u = 255 ÷ 15 = 17
Difference in the number of stickers between Ivan and John at first
= 4 u - 1 u
= 3 u
= 3 x 17
= 51
Answer(s): 51