PSLE Jane has a number of pencils in three colours: brown, orange and yellow.
79 of the pencils are brown. The number of brown pencils is four times the number of orange pencils. What fraction of the pencils is yellow?
Brown |
Orange |
Yellow |
Total |
7x4 |
2x4 |
9x4 |
4x7 |
1x7 |
|
|
28 u |
7 u |
1 u |
36 u |
Number of brown pencils is the repeated identity.
Make the number of brown pencils the same.
LCM of 7 and 4 = 28
Number of yellow pencils
= 36 u - 28 u - 7 u
= 1 u
Fraction of the pencils that is yellow
=
136 Answer(s):
136