PSLE Caden, Harry and Jack had 162 stickers altogether. Caden gave
320 of his stickers to Harry and
25 of his stickers to Jack. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Harry and Jack at first?
|
Caden |
Harry |
Jack |
Total |
Before |
20 u |
6 u |
1 u |
27 u |
Change 1 |
- 3 u |
+ 3 u |
|
|
Change 2 |
- 8 u |
|
+ 8 u |
|
After |
9 u |
9 u |
9 u |
27 u |
Comparing between Caden, Harry and Jack in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that Caden had left
= 1 -
320 -
25 = 1 -
320 -
820 =
920 Total number of stickers
= 3 x 9 u
= 27 u
27 u = 162
1 u = 162 ÷ 27 = 6
Difference in the number of stickers between Harry and Jack at first
= 6 u - 1 u
= 5 u
= 5 x 6
= 30
Answer(s): 30