PSLE Barbara has a number of markers in three colours: purple, orange and red.
811 of the markers are purple. The number of purple markers is four times the number of orange markers. What fraction of the markers is red?
Purple |
Orange |
Red |
Total |
8x1 |
3x1 |
11x1 |
4x2 |
1x2 |
|
|
8 u |
2 u |
1 u |
11 u |
Number of purple markers is the repeated identity.
Make the number of purple markers the same.
LCM of 8 and 4 = 8
Number of red markers
= 11 u - 8 u - 2 u
= 1 u
Fraction of the markers that is red
=
111 Answer(s):
111