PSLE Warren, Harry and Bobby had 324 stickers altogether. Warren gave
320 of his stickers to Harry and
25 of his stickers to Bobby. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Harry and Bobby at first?
|
Warren |
Harry |
Bobby |
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 Warren, Harry and Bobby in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that Warren had left
= 1 -
320 -
25 = 1 -
320 -
820 =
920 Total number of stickers
= 3 x 9 u
= 27 u
27 u = 324
1 u = 324 ÷ 27 = 12
Difference in the number of stickers between Harry and Bobby at first
= 6 u - 1 u
= 5 u
= 5 x 12
= 60
Answer(s): 60