PSLE Gabriel, Billy and Cole had 504 stickers altogether. Gabriel gave
320 of his stickers to Billy and
14 of his stickers to Cole. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Billy and Cole at first?
|
Gabriel |
Billy |
Cole |
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 Gabriel, Billy and Cole in the end |
1x12 = 12 u |
1x12 = 12 u |
1x12 = 12 u |
3x12 = 36 u |
Fraction of stickers that Gabriel had left
= 1 -
320 -
14 = 1 -
320 -
520 =
1220 Total number of stickers
= 3 x 12 u
= 36 u
36 u = 504
1 u = 504 ÷ 36 = 14
Difference in the number of stickers between Billy and Cole at first
= 9 u - 7 u
= 2 u
= 2 x 14
= 28
Answer(s): 28