PSLE Olivia has a number of notebooks in three colours: green, orange and blue.
23 of the notebooks are green. The number of green notebooks is thrice the number of orange notebooks. What fraction of the notebooks is blue?
Green |
Orange |
Blue |
Total |
2x3 |
1x3 |
3x3 |
3x2 |
1x2 |
|
|
6 u |
2 u |
1 u |
9 u |
Number of green notebooks is the repeated identity.
Make the number of green notebooks the same.
LCM of 2 and 3 = 6
Number of blue notebooks
= 9 u - 6 u - 2 u
= 1 u
Fraction of the notebooks that is blue
=
19 Answer(s):
19