PSLE Cody, Carl and Will had 288 stickers altogether. Cody gave
320 of his stickers to Carl and
14 of his stickers to Will. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Carl and Will at first?
|
Cody |
Carl |
Will |
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 Cody, Carl and Will in the end |
1x12 = 12 u |
1x12 = 12 u |
1x12 = 12 u |
3x12 = 36 u |
Fraction of stickers that Cody had left
= 1 -
320 -
14 = 1 -
320 -
520 =
1220 Total number of stickers
= 3 x 12 u
= 36 u
36 u = 288
1 u = 288 ÷ 36 = 8
Difference in the number of stickers between Carl and Will at first
= 9 u - 7 u
= 2 u
= 2 x 8
= 16
Answer(s): 16