PSLE Ahmad, Brandon and Glen had 486 stickers altogether. Ahmad gave
320 of his stickers to Brandon and
25 of his stickers to Glen. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Brandon and Glen at first?
|
Ahmad |
Brandon |
Glen |
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 Ahmad, Brandon and Glen in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that Ahmad had left
= 1 -
320 -
25 = 1 -
320 -
820 =
920 Total number of stickers
= 3 x 9 u
= 27 u
27 u = 486
1 u = 486 ÷ 27 = 18
Difference in the number of stickers between Brandon and Glen at first
= 6 u - 1 u
= 5 u
= 5 x 18
= 90
Answer(s): 90