PSLE Seth, Simon and Daniel had 135 stickers altogether. Seth gave
320 of his stickers to Simon and
25 of his stickers to Daniel. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Simon and Daniel at first?
|
Seth |
Simon |
Daniel |
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 Seth, Simon and Daniel in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that Seth had left
= 1 -
320 -
25 = 1 -
320 -
820 =
920 Total number of stickers
= 3 x 9 u
= 27 u
27 u = 135
1 u = 135 ÷ 27 = 5
Difference in the number of stickers between Simon and Daniel at first
= 6 u - 1 u
= 5 u
= 5 x 5
= 25
Answer(s): 25