PSLE Risa has a number of markers in three colours: green, purple and brown.
12 of the markers are green. The number of green markers is twice the number of purple markers. What fraction of the markers is brown?
Green |
Purple |
Brown |
Total |
1x2 |
1x2 |
2x2 |
2x1 |
1x1 |
|
|
2 u |
1 u |
1 u |
4 u |
Number of green markers is the repeated identity.
Make the number of green markers the same.
LCM of 1 and 2 = 2
Number of brown markers
= 4 u - 2 u - 1 u
= 1 u
Fraction of the markers that is brown
=
14 Answer(s):
14