PSLE Esther has a number of markers in three colours: brown, green and red.
58 of the markers are brown. The number of brown markers is twice the number of green markers. What fraction of the markers is red?
Brown |
Green |
Red |
Total |
5x2 |
3x2 |
8x2 |
2x5 |
1x5 |
|
|
10 u |
5 u |
1 u |
16 u |
Number of brown markers is the repeated identity.
Make the number of brown markers the same.
LCM of 5 and 2 = 10
Number of red markers
= 16 u - 10 u - 5 u
= 1 u
Fraction of the markers that is red
=
116 Answer(s):
116