PSLE Irene has a number of pencils in three colours: blue, brown and orange.
511 of the pencils are blue. The number of blue pencils is four times the number of brown pencils. What fraction of the pencils is orange?
Blue |
Brown |
Orange |
Total |
5x4 |
6x4 |
11x4 |
4x5 |
1x5 |
|
|
20 u |
5 u |
19 u |
44 u |
Number of blue pencils is the repeated identity.
Make the number of blue pencils the same.
LCM of 5 and 4 = 20
Number of orange pencils
= 44 u - 20 u - 5 u
= 19 u
Fraction of the pencils that is orange
=
1944 Answer(s):
1944