PSLE Shannon has a number of pencils in three colours: blue, green and purple.
37 of the pencils are blue. The number of blue pencils is twice the number of green pencils. What fraction of the pencils is purple?
Blue |
Green |
Purple |
Total |
3x2 |
4x2 |
7x2 |
2x3 |
1x3 |
|
|
6 u |
3 u |
5 u |
14 u |
Number of blue pencils is the repeated identity.
Make the number of blue pencils the same.
LCM of 3 and 2 = 6
Number of purple pencils
= 14 u - 6 u - 3 u
= 5 u
Fraction of the pencils that is purple
=
514 Answer(s):
514