PSLE Fabian, Julian and Ben had 105 stickers altogether. Fabian gave
110 of his stickers to Julian and
25 of his stickers to Ben. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Julian and Ben at first?
|
Fabian |
Julian |
Ben |
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 Fabian, Julian and Ben in the end |
1x5 = 5 u |
1x5 = 5 u |
1x5 = 5 u |
3x5 = 15 u |
Fraction of stickers that Fabian had left
= 1 -
110 -
25 = 1 -
110 -
410 =
510 Total number of stickers
= 3 x 5 u
= 15 u
15 u = 105
1 u = 105 ÷ 15 = 7
Difference in the number of stickers between Julian and Ben at first
= 4 u - 1 u
= 3 u
= 3 x 7
= 21
Answer(s): 21