PSLE Andy, Valen and Ian had 120 stickers altogether. Andy gave
110 of his stickers to Valen and
25 of his stickers to Ian. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Valen and Ian at first?
|
Andy |
Valen |
Ian |
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 Andy, Valen and Ian in the end |
1x5 = 5 u |
1x5 = 5 u |
1x5 = 5 u |
3x5 = 15 u |
Fraction of stickers that Andy had left
= 1 -
110 -
25 = 1 -
110 -
410 =
510 Total number of stickers
= 3 x 5 u
= 15 u
15 u = 120
1 u = 120 ÷ 15 = 8
Difference in the number of stickers between Valen and Ian at first
= 4 u - 1 u
= 3 u
= 3 x 8
= 24
Answer(s): 24