PSLE Lynn has a number of markers in three colours: yellow, purple and green.
711 of the markers are yellow. The number of yellow markers is thrice the number of purple markers. What fraction of the markers is green?
Yellow |
Purple |
Green |
Total |
7x3 |
4x3 |
11x3 |
3x7 |
1x7 |
|
|
21 u |
7 u |
5 u |
33 u |
Number of yellow markers is the repeated identity.
Make the number of yellow markers the same.
LCM of 7 and 3 = 21
Number of green markers
= 33 u - 21 u - 7 u
= 5 u
Fraction of the markers that is green
=
533 Answer(s):
533