PSLE Ryan, Reggie and Japheth had 150 stickers altogether. Ryan gave
110 of his stickers to Reggie and
25 of his stickers to Japheth. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Reggie and Japheth at first?
|
Ryan |
Reggie |
Japheth |
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 Ryan, Reggie and Japheth in the end |
1x5 = 5 u |
1x5 = 5 u |
1x5 = 5 u |
3x5 = 15 u |
Fraction of stickers that Ryan had left
= 1 -
110 -
25 = 1 -
110 -
410 =
510 Total number of stickers
= 3 x 5 u
= 15 u
15 u = 150
1 u = 150 ÷ 15 = 10
Difference in the number of stickers between Reggie and Japheth at first
= 4 u - 1 u
= 3 u
= 3 x 10
= 30
Answer(s): 30