PSLE Erika has a number of markers in three colours: yellow, orange and red.
12 of the markers are yellow. The number of yellow markers is four times the number of orange markers. What fraction of the markers is red?
Yellow |
Orange |
Red |
Total |
1x4 |
1x4 |
2x4 |
4x1 |
1x1 |
|
|
4 u |
1 u |
3 u |
8 u |
Number of yellow markers is the repeated identity.
Make the number of yellow markers the same.
LCM of 1 and 4 = 4
Number of red markers
= 8 u - 4 u - 1 u
= 3 u
Fraction of the markers that is red
=
38 Answer(s):
38