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