PSLE Roshel has a number of staplers in three colours: orange, purple and blue.
511 of the staplers are orange. The number of orange staplers is twice the number of purple staplers. What fraction of the staplers is blue?
Orange |
Purple |
Blue |
Total |
5x2 |
6x2 |
11x2 |
2x5 |
1x5 |
|
|
10 u |
5 u |
7 u |
22 u |
Number of orange staplers is the repeated identity.
Make the number of orange staplers the same.
LCM of 5 and 2 = 10
Number of blue staplers
= 22 u - 10 u - 5 u
= 7 u
Fraction of the staplers that is blue
=
722 Answer(s):
722