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