PSLE Jade has a number of markers in three colours: red, orange and yellow.
18 of the markers are red. The number of red markers is four times the number of orange markers. What fraction of the markers is yellow?
Red |
Orange |
Yellow |
Total |
1x4 |
7x4 |
8x4 |
4x1 |
1x1 |
|
|
4 u |
1 u |
27 u |
32 u |
Number of red markers is the repeated identity.
Make the number of red markers the same.
LCM of 1 and 4 = 4
Number of yellow markers
= 32 u - 4 u - 1 u
= 27 u
Fraction of the markers that is yellow
=
2732 Answer(s):
2732