Question

It costs a family $324 to buy a 10-ft-by-12-ft rectangular rug. At this rate, what is the approximate cost of a 15-ft-by-18-ft rectangular rug?

Answer 1

$324 for a 120ft^2 rug

$2.7 for each square foot (1ft^2)

x for a 270ft^2 rug

270 x $2.7 = $729

Answer 2

The approximate cost of a 15-ft-by-18-ft rectangular rug is $729.

Explanation:

It costs a family $324 to buy a 10-ft-by-12-ft rectangular rug.

Means for
`10*12=120` square feet, the cost of rug is $324

So, for 15-ft-by-18-ft or
`15*18=270` square feet of rug, the cost will be =

`(324)/(120)*270=729`

Therefore, the approximate cost of a 15-ft-by-18-ft rectangular rug is $729.