$729.00
Explanation:
The area of the 10-ft-by-12-ft rug is 120 sq ft (10 x 12 = 120).
The cost per sq ft is $2.70 ($324 / 120 = $2.70).
To find the cost of the 15-ft-by-18-ft rug, calculate the area (15 x 18 = 270) and multiply by the cost per sq ft ($2.70):
270 x $2.70 = $729.00
It costs a family $324.00 to buy a
10-ft-by-12-ft rug. If the cost is
proportional to the area, what will
it cost the family to buy a 15-ftby-18-ft rug?
(1 point)
$729.00
$270.00
$388.80
$466.56
1 answer