PSLE Jaslyn has a number of notebooks in three colours: blue, yellow and purple.
12 of the notebooks are blue. The number of blue notebooks is four times the number of yellow notebooks. What fraction of the notebooks is purple?
Blue |
Yellow |
Purple |
Total |
1x4 |
1x4 |
2x4 |
4x1 |
1x1 |
|
|
4 u |
1 u |
3 u |
8 u |
Number of blue notebooks is the repeated identity.
Make the number of blue notebooks the same.
LCM of 1 and 4 = 4
Number of purple notebooks
= 8 u - 4 u - 1 u
= 3 u
Fraction of the notebooks that is purple
=
38 Answer(s):
38