PSLE Min has a number of pencils in three colours: green, orange and red.
12 of the pencils are green. The number of green pencils is four times the number of orange pencils. What fraction of the pencils is red?
Green |
Orange |
Red |
Total |
1x4 |
1x4 |
2x4 |
4x1 |
1x1 |
|
|
4 u |
1 u |
3 u |
8 u |
Number of green pencils is the repeated identity.
Make the number of green pencils the same.
LCM of 1 and 4 = 4
Number of red pencils
= 8 u - 4 u - 1 u
= 3 u
Fraction of the pencils that is red
=
38 Answer(s):
38