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