PSLE Tim, Zeph and Luke had 195 stickers altogether. Tim gave
110 of his stickers to Zeph and
25 of his stickers to Luke. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Zeph and Luke at first?
|
Tim |
Zeph |
Luke |
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 Tim, Zeph and Luke in the end |
1x5 = 5 u |
1x5 = 5 u |
1x5 = 5 u |
3x5 = 15 u |
Fraction of stickers that Tim had left
= 1 -
110 -
25 = 1 -
110 -
410 =
510 Total number of stickers
= 3 x 5 u
= 15 u
15 u = 195
1 u = 195 ÷ 15 = 13
Difference in the number of stickers between Zeph and Luke at first
= 4 u - 1 u
= 3 u
= 3 x 13
= 39
Answer(s): 39