PSLE Yen has a number of staplers in three colours: purple, red and orange.
79 of the staplers are purple. The number of purple staplers is four times the number of red staplers. What fraction of the staplers is orange?
Purple |
Red |
Orange |
Total |
7x4 |
2x4 |
9x4 |
4x7 |
1x7 |
|
|
28 u |
7 u |
1 u |
36 u |
Number of purple staplers is the repeated identity.
Make the number of purple staplers the same.
LCM of 7 and 4 = 28
Number of orange staplers
= 36 u - 28 u - 7 u
= 1 u
Fraction of the staplers that is orange
=
136 Answer(s):
136