PSLE Michael, Fabian and Ian had 396 stickers altogether. Michael gave
320 of his stickers to Fabian and
14 of his stickers to Ian. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Fabian and Ian at first?
|
Michael |
Fabian |
Ian |
Total |
Before |
20 u |
9 u |
7 u |
36 u |
Change 1 |
- 3 u |
+ 3 u |
|
|
Change 2 |
- 5 u |
|
+ 5 u |
|
After |
12 u |
12 u |
12 u |
36 u |
Comparing between Michael, Fabian and Ian in the end |
1x12 = 12 u |
1x12 = 12 u |
1x12 = 12 u |
3x12 = 36 u |
Fraction of stickers that Michael had left
= 1 -
320 -
14 = 1 -
320 -
520 =
1220 Total number of stickers
= 3 x 12 u
= 36 u
36 u = 396
1 u = 396 ÷ 36 = 11
Difference in the number of stickers between Fabian and Ian at first
= 9 u - 7 u
= 2 u
= 2 x 11
= 22
Answer(s): 22