PSLE Gem has a number of files in three colours: blue, yellow and brown.
511 of the files are blue. The number of blue files is four times the number of yellow files. What fraction of the files is brown?
Blue |
Yellow |
Brown |
Total |
5x4 |
6x4 |
11x4 |
4x5 |
1x5 |
|
|
20 u |
5 u |
19 u |
44 u |
Number of blue files is the repeated identity.
Make the number of blue files the same.
LCM of 5 and 4 = 20
Number of brown files
= 44 u - 20 u - 5 u
= 19 u
Fraction of the files that is brown
=
1944 Answer(s):
1944