PSLE Fred, Oliver and Julian had 324 stickers altogether. Fred gave
320 of his stickers to Oliver and
25 of his stickers to Julian. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Oliver and Julian at first?
|
Fred |
Oliver |
Julian |
Total |
Before |
20 u |
6 u |
1 u |
27 u |
Change 1 |
- 3 u |
+ 3 u |
|
|
Change 2 |
- 8 u |
|
+ 8 u |
|
After |
9 u |
9 u |
9 u |
27 u |
Comparing between Fred, Oliver and Julian in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that Fred had left
= 1 -
320 -
25 = 1 -
320 -
820 =
920 Total number of stickers
= 3 x 9 u
= 27 u
27 u = 324
1 u = 324 ÷ 27 = 12
Difference in the number of stickers between Oliver and Julian at first
= 6 u - 1 u
= 5 u
= 5 x 12
= 60
Answer(s): 60