PSLE Elijah, Brandon and Tim had 75 stickers altogether. Elijah gave
110 of his stickers to Brandon and
25 of his stickers to Tim. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Brandon and Tim at first?
|
Elijah |
Brandon |
Tim |
Total |
Before |
10 u |
4 u |
1 u |
15 u |
Change 1 |
- 1 u |
+ 1 u |
|
|
Change 2 |
- 4 u |
|
+ 4 u |
|
After |
5 u |
5 u |
5 u |
15 u |
Comparing between Elijah, Brandon and Tim in the end |
1x5 = 5 u |
1x5 = 5 u |
1x5 = 5 u |
3x5 = 15 u |
Fraction of stickers that Elijah had left
= 1 -
110 -
25 = 1 -
110 -
410 =
510 Total number of stickers
= 3 x 5 u
= 15 u
15 u = 75
1 u = 75 ÷ 15 = 5
Difference in the number of stickers between Brandon and Tim at first
= 4 u - 1 u
= 3 u
= 3 x 5
= 15
Answer(s): 15