PSLE Caden, Tim and Eric had 135 stickers altogether. Caden gave
320 of his stickers to Tim and
25 of his stickers to Eric. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Tim and Eric at first?
|
Caden |
Tim |
Eric |
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, Tim and Eric 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 = 135
1 u = 135 ÷ 27 = 5
Difference in the number of stickers between Tim and Eric at first
= 6 u - 1 u
= 5 u
= 5 x 5
= 25
Answer(s): 25