PSLE Pamela has a number of markers in three colours: purple, red and yellow.
15 of the markers are purple. The number of purple markers is thrice the number of red markers. What fraction of the markers is yellow?
Purple |
Red |
Yellow |
Total |
1x3 |
4x3 |
5x3 |
3x1 |
1x1 |
|
|
3 u |
1 u |
11 u |
15 u |
Number of purple markers is the repeated identity.
Make the number of purple markers the same.
LCM of 1 and 3 = 3
Number of yellow markers
= 15 u - 3 u - 1 u
= 11 u
Fraction of the markers that is yellow
=
1115 Answer(s):
1115