PSLE Shiyun has a number of notebooks in three colours: purple, orange and yellow.
711 of the notebooks are purple. The number of purple notebooks is twice the number of orange notebooks. What fraction of the notebooks is yellow?
Purple |
Orange |
Yellow |
Total |
7x2 |
4x2 |
11x2 |
2x7 |
1x7 |
|
|
14 u |
7 u |
1 u |
22 u |
Number of purple notebooks is the repeated identity.
Make the number of purple notebooks the same.
LCM of 7 and 2 = 14
Number of yellow notebooks
= 22 u - 14 u - 7 u
= 1 u
Fraction of the notebooks that is yellow
=
122 Answer(s):
122