PSLE Tammy has a number of markers in three colours: green, purple and red.
23 of the markers are green. The number of green markers is four times the number of purple markers. What fraction of the markers is red?
Green |
Purple |
Red |
Total |
2x2 |
1x2 |
3x2 |
4x1 |
1x1 |
|
|
4 u |
1 u |
1 u |
6 u |
Number of green markers is the repeated identity.
Make the number of green markers the same.
LCM of 2 and 4 = 4
Number of red markers
= 6 u - 4 u - 1 u
= 1 u
Fraction of the markers that is red
=
16 Answer(s):
16