A rectangular napkin cost $2.75. A similar tablecloth is 5 times wider and 5 times longer. If the cost is proportional to the area of the napkin, how much would you expect to pay for the tablecloth?(
$16.25
$81.25
$13.75
$68.75
$81.25
The area of the tablecloth is 25 times greater than the area of the napkin (5 times wider and 5 times longer). Since the cost is proportional to the area, you would expect to pay 25 times the cost of the napkin.
$2.75 x 25 = $68.75
Therefore, you would expect to pay $68.75 for the tablecloth.