SOLUTION: What will it cost to carpet a rectangular floor measuring 9 feet by 21 feet if the carpet costs $26.50 per square yard. Please show formula steps. Thank you in advance, SYL

Algebra ->  Rectangles -> SOLUTION: What will it cost to carpet a rectangular floor measuring 9 feet by 21 feet if the carpet costs $26.50 per square yard. Please show formula steps. Thank you in advance, SYL      Log On


   



Question 1153621: What will it cost to carpet a rectangular floor measuring 9 feet by 21 feet if the carpet costs $26.50 per square yard.
Please show formula steps.
Thank you in advance,
SYL

Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!

One way...
Compute area in square feet:
+9ft+x+21ft+=+189ft%5E2+
Convert square feet to square yards:
189ft%5E2+%2A+%281yd%5E2%2F9ft%5E2%29+=+21yd%5E2
Multiply square yards by price per square yard

------
I carried along the units to illustrate how they can help keep things straight. For example, in the conversion to square yards, notice how ft%5E2 will cancel, leaving +yd%5E2