PSLE Rael, Elijah and Jack had 189 stickers altogether. Rael gave
320 of his stickers to Elijah 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 Elijah and Jack at first?
|
Rael |
Elijah |
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 Rael, Elijah and Jack in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that Rael had left
= 1 -
320 -
25 = 1 -
320 -
820 =
920 Total number of stickers
= 3 x 9 u
= 27 u
27 u = 189
1 u = 189 ÷ 27 = 7
Difference in the number of stickers between Elijah and Jack at first
= 6 u - 1 u
= 5 u
= 5 x 7
= 35
Answer(s): 35