PSLE Ken, Luke and Charlie had 468 stickers altogether. Ken gave
320 of his stickers to Luke and
14 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 Luke and Charlie at first?
|
Ken |
Luke |
Charlie |
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 Ken, Luke and Charlie in the end |
1x12 = 12 u |
1x12 = 12 u |
1x12 = 12 u |
3x12 = 36 u |
Fraction of stickers that Ken had left
= 1 -
320 -
14 = 1 -
320 -
520 =
1220 Total number of stickers
= 3 x 12 u
= 36 u
36 u = 468
1 u = 468 ÷ 36 = 13
Difference in the number of stickers between Luke and Charlie at first
= 9 u - 7 u
= 2 u
= 2 x 13
= 26
Answer(s): 26