PSLE Min has a number of files in three colours: green, blue and orange.
13 of the files are green. The number of green files is four times the number of blue files. What fraction of the files is orange?
Green |
Blue |
Orange |
Total |
1x4 |
2x4 |
3x4 |
4x1 |
1x1 |
|
|
4 u |
1 u |
7 u |
12 u |
Number of green files is the repeated identity.
Make the number of green files the same.
LCM of 1 and 4 = 4
Number of orange files
= 12 u - 4 u - 1 u
= 7 u
Fraction of the files that is orange
=
712 Answer(s):
712