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 Keven 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?
3 feet
6 feet
8 feet
10 feet

I got 6 feet for my answer, but I'm not sure if I did this right...Could someone check this for me?

Question

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 Keven 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?
3 feet
6 feet
8 feet
10 feet 

I got 6 feet for my answer, but I'm not sure if I did this right...Could someone check this for me?

campbell_st · Answer

start by finding the volume of concrete he bought.

72.59/98 = 

then convert the known measurements to yards

10ft    = 10/3 ft

3 inches = 0.25/3

and I don't think its 6 ft

anonymous · Answer

Okay, so I did:
0.74 = 3.3 * 0.083 * w 
0.74 = 0.27 * w 
0.74/0.27 = 2.7 
w = 2.7 

So the answer would be 3 feet?

campbell_st · Answer

thats correct

anonymous · Answer

Thank you for your help (: