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