PSLE Kimberly has a number of files in three colours: brown, green and blue.
611 of the files are brown. The number of brown files is thrice the number of green files. What fraction of the files is blue?
Brown |
Green |
Blue |
Total |
6x1 |
5x1 |
11x1 |
3x2 |
1x2 |
|
|
6 u |
2 u |
3 u |
11 u |
Number of brown files is the repeated identity.
Make the number of brown files the same.
LCM of 6 and 3 = 6
Number of blue files
= 11 u - 6 u - 2 u
= 3 u
Fraction of the files that is blue
=
311 Answer(s):
311