PSLE Tiffany has a number of files in three colours: green, red and brown.
23 of the files are green. The number of green files is four times the number of red files. What fraction of the files is brown?
Green |
Red |
Brown |
Total |
2x2 |
1x2 |
3x2 |
4x1 |
1x1 |
|
|
4 u |
1 u |
1 u |
6 u |
Number of green files is the repeated identity.
Make the number of green files the same.
LCM of 2 and 4 = 4
Number of brown files
= 6 u - 4 u - 1 u
= 1 u
Fraction of the files that is brown
=
16 Answer(s):
16