PSLE Natalie has a number of files in three colours: red, orange and brown.
29 of the files are red. The number of red files is thrice the number of orange files. What fraction of the files is brown?
Red |
Orange |
Brown |
Total |
2x3 |
7x3 |
9x3 |
3x2 |
1x2 |
|
|
6 u |
2 u |
19 u |
27 u |
Number of red files is the repeated identity.
Make the number of red files the same.
LCM of 2 and 3 = 6
Number of brown files
= 27 u - 6 u - 2 u
= 19 u
Fraction of the files that is brown
=
1927 Answer(s):
1927