PSLE Bryan, Nick and John had 180 stickers altogether. Bryan gave
110 of his stickers to Nick and
25 of his stickers to John. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Nick and John at first?
|
Bryan |
Nick |
John |
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 Bryan, Nick and John in the end |
1x5 = 5 u |
1x5 = 5 u |
1x5 = 5 u |
3x5 = 15 u |
Fraction of stickers that Bryan had left
= 1 -
110 -
25 = 1 -
110 -
410 =
510 Total number of stickers
= 3 x 5 u
= 15 u
15 u = 180
1 u = 180 ÷ 15 = 12
Difference in the number of stickers between Nick and John at first
= 4 u - 1 u
= 3 u
= 3 x 12
= 36
Answer(s): 36