PSLE Ivory has a number of markers in three colours: green, brown and yellow.
712 of the markers are green. The number of green markers is four times the number of brown markers. What fraction of the markers is yellow?
Green |
Brown |
Yellow |
Total |
7x4 |
5x4 |
12x4 |
4x7 |
1x7 |
|
|
28 u |
7 u |
13 u |
48 u |
Number of green markers is the repeated identity.
Make the number of green markers the same.
LCM of 7 and 4 = 28
Number of yellow markers
= 48 u - 28 u - 7 u
= 13 u
Fraction of the markers that is yellow
=
1348 Answer(s):
1348