PSLE Neave, Bobby and Charlie had 165 stickers altogether. Neave gave
110 of his stickers to Bobby and
25 of his stickers to Charlie. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Bobby and Charlie at first?
|
Neave |
Bobby |
Charlie |
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 Neave, Bobby and Charlie in the end |
1x5 = 5 u |
1x5 = 5 u |
1x5 = 5 u |
3x5 = 15 u |
Fraction of stickers that Neave had left
= 1 -
110 -
25 = 1 -
110 -
410 =
510 Total number of stickers
= 3 x 5 u
= 15 u
15 u = 165
1 u = 165 ÷ 15 = 11
Difference in the number of stickers between Bobby and Charlie at first
= 4 u - 1 u
= 3 u
= 3 x 11
= 33
Answer(s): 33