PSLE Charlie, Valen and Ivan had 504 stickers altogether. Charlie gave
320 of his stickers to Valen and
14 of his stickers to Ivan. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Valen and Ivan at first?
|
Charlie |
Valen |
Ivan |
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 Charlie, Valen and Ivan in the end |
1x12 = 12 u |
1x12 = 12 u |
1x12 = 12 u |
3x12 = 36 u |
Fraction of stickers that Charlie had left
= 1 -
320 -
14 = 1 -
320 -
520 =
1220 Total number of stickers
= 3 x 12 u
= 36 u
36 u = 504
1 u = 504 ÷ 36 = 14
Difference in the number of stickers between Valen and Ivan at first
= 9 u - 7 u
= 2 u
= 2 x 14
= 28
Answer(s): 28