PSLE Mary has a number of files in three colours: blue, red and green.
14 of the files are blue. The number of blue files is twice the number of red files. What fraction of the files is green?
Blue |
Red |
Green |
Total |
1x2 |
3x2 |
4x2 |
2x1 |
1x1 |
|
|
2 u |
1 u |
5 u |
8 u |
Number of blue files is the repeated identity.
Make the number of blue files the same.
LCM of 1 and 2 = 2
Number of green files
= 8 u - 2 u - 1 u
= 5 u
Fraction of the files that is green
=
58 Answer(s):
58