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