PSLE Dylan, Oliver and Ivan had 285 stickers altogether. Dylan gave
110 of his stickers to Oliver and
25 of his stickers to Ivan. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Oliver and Ivan at first?
|
Dylan |
Oliver |
Ivan |
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 Dylan, Oliver and Ivan in the end |
1x5 = 5 u |
1x5 = 5 u |
1x5 = 5 u |
3x5 = 15 u |
Fraction of stickers that Dylan had left
= 1 -
110 -
25 = 1 -
110 -
410 =
510 Total number of stickers
= 3 x 5 u
= 15 u
15 u = 285
1 u = 285 ÷ 15 = 19
Difference in the number of stickers between Oliver and Ivan at first
= 4 u - 1 u
= 3 u
= 3 x 19
= 57
Answer(s): 57