PSLE Julie has a number of notebooks in three colours: purple, blue and brown.
35 of the notebooks are purple. The number of purple notebooks is twice the number of blue notebooks. What fraction of the notebooks is brown?
Purple |
Blue |
Brown |
Total |
3x2 |
2x2 |
5x2 |
2x3 |
1x3 |
|
|
6 u |
3 u |
1 u |
10 u |
Number of purple notebooks is the repeated identity.
Make the number of purple notebooks the same.
LCM of 3 and 2 = 6
Number of brown notebooks
= 10 u - 6 u - 3 u
= 1 u
Fraction of the notebooks that is brown
=
110 Answer(s):
110