PSLE Jenson, Cole and Simon had 648 stickers altogether. Jenson gave
320 of his stickers to Cole and
14 of his stickers to Simon. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Cole and Simon at first?
|
Jenson |
Cole |
Simon |
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 Jenson, Cole and Simon in the end |
1x12 = 12 u |
1x12 = 12 u |
1x12 = 12 u |
3x12 = 36 u |
Fraction of stickers that Jenson had left
= 1 -
320 -
14 = 1 -
320 -
520 =
1220 Total number of stickers
= 3 x 12 u
= 36 u
36 u = 648
1 u = 648 ÷ 36 = 18
Difference in the number of stickers between Cole and Simon at first
= 9 u - 7 u
= 2 u
= 2 x 18
= 36
Answer(s): 36