Kevin plans to put concrete on a rectangular portion of his driveway. The portion is 10 feet long and 3 inches high. The price of concrete is $98 per cubic yard. The total cost of the concrete Kevin needs is $72.59. Which of the following is closest to the width of the portion of the driveway on which Kevin plans to put concrete?
cubic yards= w x 10 x 3
since he pays $72.59, he does have:
$98yard3=$72.59x
which is the same as
yard3$98=x$72.59
and so we getyard3×$72.59$98=xyards
he has used concrete equalling
72.59/98 = 0.74 cubic yards
