PSLE Caden, Will and Tommy had 612 stickers altogether. Caden gave
320 of his stickers to Will and
14 of his stickers to Tommy. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Will and Tommy at first?
|
Caden |
Will |
Tommy |
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 Caden, Will and Tommy in the end |
1x12 = 12 u |
1x12 = 12 u |
1x12 = 12 u |
3x12 = 36 u |
Fraction of stickers that Caden had left
= 1 -
320 -
14 = 1 -
320 -
520 =
1220 Total number of stickers
= 3 x 12 u
= 36 u
36 u = 612
1 u = 612 ÷ 36 = 17
Difference in the number of stickers between Will and Tommy at first
= 9 u - 7 u
= 2 u
= 2 x 17
= 34
Answer(s): 34