PSLE Olivia has a number of notebooks in three colours: brown, red and orange.
47 of the notebooks are brown. The number of brown notebooks is twice the number of red notebooks. What fraction of the notebooks is orange?
Brown |
Red |
Orange |
Total |
4x1 |
3x1 |
7x1 |
2x2 |
1x2 |
|
|
4 u |
2 u |
1 u |
7 u |
Number of brown notebooks is the repeated identity.
Make the number of brown notebooks the same.
LCM of 4 and 2 = 4
Number of orange notebooks
= 7 u - 4 u - 2 u
= 1 u
Fraction of the notebooks that is orange
=
17 Answer(s):
17