PSLE Bryan, Caden and Mark had 255 stickers altogether. Bryan gave
110 of his stickers to Caden and
25 of his stickers to Mark. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Caden and Mark at first?
|
Bryan |
Caden |
Mark |
Total |
Before |
10 u |
4 u |
1 u |
15 u |
Change 1 |
- 1 u |
+ 1 u |
|
|
Change 2 |
- 4 u |
|
+ 4 u |
|
After |
5 u |
5 u |
5 u |
15 u |
Comparing between Bryan, Caden and Mark in the end |
1x5 = 5 u |
1x5 = 5 u |
1x5 = 5 u |
3x5 = 15 u |
Fraction of stickers that Bryan had left
= 1 -
110 -
25 = 1 -
110 -
410 =
510 Total number of stickers
= 3 x 5 u
= 15 u
15 u = 255
1 u = 255 ÷ 15 = 17
Difference in the number of stickers between Caden and Mark at first
= 4 u - 1 u
= 3 u
= 3 x 17
= 51
Answer(s): 51