PSLE Risa has a number of files in three colours: green, orange and purple.
38 of the files are green. The number of green files is twice the number of orange files. What fraction of the files is purple?
Green |
Orange |
Purple |
Total |
3x2 |
5x2 |
8x2 |
2x3 |
1x3 |
|
|
6 u |
3 u |
7 u |
16 u |
Number of green files is the repeated identity.
Make the number of green files the same.
LCM of 3 and 2 = 6
Number of purple files
= 16 u - 6 u - 3 u
= 7 u
Fraction of the files that is purple
=
716 Answer(s):
716