PSLE Sabrina has a number of staplers in three colours: orange, purple and yellow.
13 of the staplers are orange. The number of orange staplers is thrice the number of purple staplers. What fraction of the staplers is yellow?
Orange |
Purple |
Yellow |
Total |
1x3 |
2x3 |
3x3 |
3x1 |
1x1 |
|
|
3 u |
1 u |
5 u |
9 u |
Number of orange staplers is the repeated identity.
Make the number of orange staplers the same.
LCM of 1 and 3 = 3
Number of yellow staplers
= 9 u - 3 u - 1 u
= 5 u
Fraction of the staplers that is yellow
=
59 Answer(s):
59