PSLE Bobby, Fabian and Tom had 270 stickers altogether. Bobby gave
320 of his stickers to Fabian and
25 of his stickers to Tom. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Fabian and Tom at first?
|
Bobby |
Fabian |
Tom |
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 Bobby, Fabian and Tom in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that Bobby had left
= 1 -
320 -
25 = 1 -
320 -
820 =
920 Total number of stickers
= 3 x 9 u
= 27 u
27 u = 270
1 u = 270 ÷ 27 = 10
Difference in the number of stickers between Fabian and Tom at first
= 6 u - 1 u
= 5 u
= 5 x 10
= 50
Answer(s): 50