PSLE Raeann has a number of pencils in three colours: yellow, brown and purple.
411 of the pencils are yellow. The number of yellow pencils is thrice the number of brown pencils. What fraction of the pencils is purple?
Yellow |
Brown |
Purple |
Total |
4x3 |
7x3 |
11x3 |
3x4 |
1x4 |
|
|
12 u |
4 u |
17 u |
33 u |
Number of yellow pencils is the repeated identity.
Make the number of yellow pencils the same.
LCM of 4 and 3 = 12
Number of purple pencils
= 33 u - 12 u - 4 u
= 17 u
Fraction of the pencils that is purple
=
1733 Answer(s):
1733