PSLE Sarah has a number of pens in three colours: yellow, brown and purple.
14 of the pens are yellow. The number of yellow pens is four times the number of brown pens. What fraction of the pens is purple?
Yellow |
Brown |
Purple |
Total |
1x4 |
3x4 |
4x4 |
4x1 |
1x1 |
|
|
4 u |
1 u |
11 u |
16 u |
Number of yellow pens is the repeated identity.
Make the number of yellow pens the same.
LCM of 1 and 4 = 4
Number of purple pens
= 16 u - 4 u - 1 u
= 11 u
Fraction of the pens that is purple
=
1116 Answer(s):
1116