If 8 yards of fabric cost 40. how much will 12 yards cost, assuming the cost is proportional? For Teacher Use Only QRNR7.DOK2430120 MAL3Q14 60 50 70 80

To find out how much 12 yards of fabric will cost, we need to set up a proportion based on the given information.<br /><br />First, let's find the cost per yard:<br />\[ \text{Cost per yard} = \frac{\$40}{8 \text{ yards}} = \$5 \text{ per yard} \]<br /><br />Now, we can use this cost per yard to find the cost for 12 yards:<br />\[ \text{Cost for 12 yards} = 12 \text{ yards} \times \$5 \text{ per yard} = \$60 \]<br /><br />Therefore, 12 yards of fabric will cost $\$60.