PSLE Asher, Justin and Vaidev had 180 stickers altogether. Asher gave
110 of his stickers to Justin and
25 of his stickers to Vaidev. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Justin and Vaidev at first?
|
Asher |
Justin |
Vaidev |
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 Asher, Justin and Vaidev in the end |
1x5 = 5 u |
1x5 = 5 u |
1x5 = 5 u |
3x5 = 15 u |
Fraction of stickers that Asher had left
= 1 -
110 -
25 = 1 -
110 -
410 =
510 Total number of stickers
= 3 x 5 u
= 15 u
15 u = 180
1 u = 180 ÷ 15 = 12
Difference in the number of stickers between Justin and Vaidev at first
= 4 u - 1 u
= 3 u
= 3 x 12
= 36
Answer(s): 36