PSLE Usha has a number of files in three colours: red, green and brown.
811 of the files are red. The number of red files is four times the number of green files. What fraction of the files is brown?
Red |
Green |
Brown |
Total |
8x1 |
3x1 |
11x1 |
4x2 |
1x2 |
|
|
8 u |
2 u |
1 u |
11 u |
Number of red files is the repeated identity.
Make the number of red files the same.
LCM of 8 and 4 = 8
Number of brown files
= 11 u - 8 u - 2 u
= 1 u
Fraction of the files that is brown
=
111 Answer(s):
111