PSLE Wendy has a number of notebooks in three colours: purple, brown and blue.
59 of the notebooks are purple. The number of purple notebooks is four times the number of brown notebooks. What fraction of the notebooks is blue?
Purple |
Brown |
Blue |
Total |
5x4 |
4x4 |
9x4 |
4x5 |
1x5 |
|
|
20 u |
5 u |
11 u |
36 u |
Number of purple notebooks is the repeated identity.
Make the number of purple notebooks the same.
LCM of 5 and 4 = 20
Number of blue notebooks
= 36 u - 20 u - 5 u
= 11 u
Fraction of the notebooks that is blue
=
1136 Answer(s):
1136