PSLE Jack, Zeph and Simon had 300 stickers altogether. Jack gave
110 of his stickers to Zeph and
25 of his stickers to Simon. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Zeph and Simon at first?
|
Jack |
Zeph |
Simon |
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 Jack, Zeph and Simon in the end |
1x5 = 5 u |
1x5 = 5 u |
1x5 = 5 u |
3x5 = 15 u |
Fraction of stickers that Jack had left
= 1 -
110 -
25 = 1 -
110 -
410 =
510 Total number of stickers
= 3 x 5 u
= 15 u
15 u = 300
1 u = 300 ÷ 15 = 20
Difference in the number of stickers between Zeph and Simon at first
= 4 u - 1 u
= 3 u
= 3 x 20
= 60
Answer(s): 60