PSLE Jaslyn has a number of pencils in three colours: red, yellow and green.
13 of the pencils are red. The number of red pencils is thrice the number of yellow pencils. What fraction of the pencils is green?
Red |
Yellow |
Green |
Total |
1x3 |
2x3 |
3x3 |
3x1 |
1x1 |
|
|
3 u |
1 u |
5 u |
9 u |
Number of red pencils is the repeated identity.
Make the number of red pencils the same.
LCM of 1 and 3 = 3
Number of green pencils
= 9 u - 3 u - 1 u
= 5 u
Fraction of the pencils that is green
=
59 Answer(s):
59