PSLE Opal has a number of pencils in three colours: purple, blue and yellow.
712 of the pencils are purple. The number of purple pencils is four times the number of blue pencils. What fraction of the pencils is yellow?
Purple |
Blue |
Yellow |
Total |
7x4 |
5x4 |
12x4 |
4x7 |
1x7 |
|
|
28 u |
7 u |
13 u |
48 u |
Number of purple pencils is the repeated identity.
Make the number of purple pencils the same.
LCM of 7 and 4 = 28
Number of yellow pencils
= 48 u - 28 u - 7 u
= 13 u
Fraction of the pencils that is yellow
=
1348 Answer(s):
1348