PSLE Elyse has a number of pens in three colours: green, blue and brown.
511 of the pens are green. The number of green pens is four times the number of blue pens. What fraction of the pens is brown?
Green |
Blue |
Brown |
Total |
5x4 |
6x4 |
11x4 |
4x5 |
1x5 |
|
|
20 u |
5 u |
19 u |
44 u |
Number of green pens is the repeated identity.
Make the number of green pens the same.
LCM of 5 and 4 = 20
Number of brown pens
= 44 u - 20 u - 5 u
= 19 u
Fraction of the pens that is brown
=
1944 Answer(s):
1944