PSLE Tommy, Fred and Jenson had 243 stickers altogether. Tommy gave
320 of his stickers to Fred and
25 of his stickers to Jenson. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Fred and Jenson at first?
|
Tommy |
Fred |
Jenson |
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 Tommy, Fred and Jenson in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that Tommy had left
= 1 -
320 -
25 = 1 -
320 -
820 =
920 Total number of stickers
= 3 x 9 u
= 27 u
27 u = 243
1 u = 243 ÷ 27 = 9
Difference in the number of stickers between Fred and Jenson at first
= 6 u - 1 u
= 5 u
= 5 x 9
= 45
Answer(s): 45