PSLE Olivia has a number of files in three colours: yellow, brown and red.
27 of the files are yellow. The number of yellow files is four times the number of brown files. What fraction of the files is red?
Yellow |
Brown |
Red |
Total |
2x2 |
5x2 |
7x2 |
4x1 |
1x1 |
|
|
4 u |
1 u |
9 u |
14 u |
Number of yellow files is the repeated identity.
Make the number of yellow files the same.
LCM of 2 and 4 = 4
Number of red files
= 14 u - 4 u - 1 u
= 9 u
Fraction of the files that is red
=
914 Answer(s):
914