PSLE Joelle has a number of pencils in three colours: blue, red and brown.
16 of the pencils are blue. The number of blue pencils is four times the number of red pencils. What fraction of the pencils is brown?
Blue |
Red |
Brown |
Total |
1x4 |
5x4 |
6x4 |
4x1 |
1x1 |
|
|
4 u |
1 u |
19 u |
24 u |
Number of blue pencils is the repeated identity.
Make the number of blue pencils the same.
LCM of 1 and 4 = 4
Number of brown pencils
= 24 u - 4 u - 1 u
= 19 u
Fraction of the pencils that is brown
=
1924 Answer(s):
1924