SOLUTION: The minimum number of carpet rolls n needed to carpet a house varies directly as the houses square footage h and inversely with the square footage r in one roll. It takes a minimum

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: The minimum number of carpet rolls n needed to carpet a house varies directly as the houses square footage h and inversely with the square footage r in one roll. It takes a minimum      Log On


   



Question 1028968: The minimum number of carpet rolls n needed to carpet a house varies directly as the houses square footage h and inversely with the square footage r in one roll. It takes a minimum of two 1200-ft ^2 carpet rolls to cover 2309 ft^2 of floor. What is the minimum number of 1200-ft ^2 carpet rolls you would need to cover 2500 ft ^2 of floor?
***I think the equation may be nh/r, so would it be (2)(2300)/(1200)?

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
I could set up the ratio:
+2+%2F+x+=+%28%28+2309%2F+1200+%29%29+%2F+%28%28+2500%2F+1200+%29%29+
+2+%2F+x+=+2309+%2F+2500+
Multiply both sides by +2500x+
+2%2A2500+=+2309x+
+2309x+=+5000+
+x+=+2.1654+
Since this is over +2+, and I assume you
can't buy part of a roll, the answer is 3
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You should get a 2nd opinion on this