PSLE Dana has a number of pencils in three colours: yellow, green and orange.
611 of the pencils are yellow. The number of yellow pencils is four times the number of green pencils. What fraction of the pencils is orange?
Yellow |
Green |
Orange |
Total |
6x2 |
5x2 |
11x2 |
4x3 |
1x3 |
|
|
12 u |
3 u |
7 u |
22 u |
Number of yellow pencils is the repeated identity.
Make the number of yellow pencils the same.
LCM of 6 and 4 = 12
Number of orange pencils
= 22 u - 12 u - 3 u
= 7 u
Fraction of the pencils that is orange
=
722 Answer(s):
722