PSLE Roshel has a number of files in three colours: orange, green and brown.
111 of the files are orange. The number of orange files is twice the number of green files. What fraction of the files is brown?
Orange |
Green |
Brown |
Total |
1x2 |
10x2 |
11x2 |
2x1 |
1x1 |
|
|
2 u |
1 u |
19 u |
22 u |
Number of orange files is the repeated identity.
Make the number of orange files the same.
LCM of 1 and 2 = 2
Number of brown files
= 22 u - 2 u - 1 u
= 19 u
Fraction of the files that is brown
=
1922 Answer(s):
1922