PSLE Hilda has a number of notebooks in three colours: brown, orange and red.
17 of the notebooks are brown. The number of brown notebooks is twice the number of orange notebooks. What fraction of the notebooks is red?
Brown |
Orange |
Red |
Total |
1x2 |
6x2 |
7x2 |
2x1 |
1x1 |
|
|
2 u |
1 u |
11 u |
14 u |
Number of brown notebooks is the repeated identity.
Make the number of brown notebooks the same.
LCM of 1 and 2 = 2
Number of red notebooks
= 14 u - 2 u - 1 u
= 11 u
Fraction of the notebooks that is red
=
1114 Answer(s):
1114