PSLE Albert, Gabriel and Tommy had 210 stickers altogether. Albert gave
110 of his stickers to Gabriel and
25 of his stickers to Tommy. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Gabriel and Tommy at first?
|
Albert |
Gabriel |
Tommy |
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 Albert, Gabriel and Tommy in the end |
1x5 = 5 u |
1x5 = 5 u |
1x5 = 5 u |
3x5 = 15 u |
Fraction of stickers that Albert had left
= 1 -
110 -
25 = 1 -
110 -
410 =
510 Total number of stickers
= 3 x 5 u
= 15 u
15 u = 210
1 u = 210 ÷ 15 = 14
Difference in the number of stickers between Gabriel and Tommy at first
= 4 u - 1 u
= 3 u
= 3 x 14
= 42
Answer(s): 42