PSLE John, Fabian and Liam had 378 stickers altogether. John gave
320 of his stickers to Fabian and
25 of his stickers to Liam. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Fabian and Liam at first?
|
John |
Fabian |
Liam |
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 John, Fabian and Liam in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that John had left
= 1 -
320 -
25 = 1 -
320 -
820 =
920 Total number of stickers
= 3 x 9 u
= 27 u
27 u = 378
1 u = 378 ÷ 27 = 14
Difference in the number of stickers between Fabian and Liam at first
= 6 u - 1 u
= 5 u
= 5 x 14
= 70
Answer(s): 70