PSLE Sam, George and Jeremy had 162 stickers altogether. Sam gave
320 of his stickers to George and
25 of his stickers to Jeremy. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between George and Jeremy at first?
|
Sam |
George |
Jeremy |
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 Sam, George and Jeremy in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that Sam had left
= 1 -
320 -
25 = 1 -
320 -
820 =
920 Total number of stickers
= 3 x 9 u
= 27 u
27 u = 162
1 u = 162 ÷ 27 = 6
Difference in the number of stickers between George and Jeremy at first
= 6 u - 1 u
= 5 u
= 5 x 6
= 30
Answer(s): 30