PSLE Luke, Bobby and Brandon had 135 stickers altogether. Luke gave
110 of his stickers to Bobby and
25 of his stickers to Brandon. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Bobby and Brandon at first?
|
Luke |
Bobby |
Brandon |
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 Luke, Bobby and Brandon in the end |
1x5 = 5 u |
1x5 = 5 u |
1x5 = 5 u |
3x5 = 15 u |
Fraction of stickers that Luke had left
= 1 -
110 -
25 = 1 -
110 -
410 =
510 Total number of stickers
= 3 x 5 u
= 15 u
15 u = 135
1 u = 135 ÷ 15 = 9
Difference in the number of stickers between Bobby and Brandon at first
= 4 u - 1 u
= 3 u
= 3 x 9
= 27
Answer(s): 27