PSLE Barbara has a number of pens in three colours: yellow, orange and purple.
14 of the pens are yellow. The number of yellow pens is twice the number of orange pens. What fraction of the pens is purple?
Yellow |
Orange |
Purple |
Total |
1x2 |
3x2 |
4x2 |
2x1 |
1x1 |
|
|
2 u |
1 u |
5 u |
8 u |
Number of yellow pens is the repeated identity.
Make the number of yellow pens the same.
LCM of 1 and 2 = 2
Number of purple pens
= 8 u - 2 u - 1 u
= 5 u
Fraction of the pens that is purple
=
58 Answer(s):
58