PSLE Cole, Eric and Howard had 684 stickers altogether. Cole gave
320 of his stickers to Eric and
14 of his stickers to Howard. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Eric and Howard at first?
|
Cole |
Eric |
Howard |
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 Cole, Eric and Howard in the end |
1x12 = 12 u |
1x12 = 12 u |
1x12 = 12 u |
3x12 = 36 u |
Fraction of stickers that Cole had left
= 1 -
320 -
14 = 1 -
320 -
520 =
1220 Total number of stickers
= 3 x 12 u
= 36 u
36 u = 684
1 u = 684 ÷ 36 = 19
Difference in the number of stickers between Eric and Howard at first
= 9 u - 7 u
= 2 u
= 2 x 19
= 38
Answer(s): 38