Answer:
270 yards
Step-by-step explanation
First write the ratio 2:6 since you know that for one hour you have 60 minutes you need to multiply 2:6 by 30:30 and you get in one hour you can get 180 yards of fabric then to find out how much you would get in a half of an hour you divide 180/2 which = 90 then add 180 +90 = 270
