SOLUTION: Sam bought a new fertilizer spreader for his yard. It has a dial on the handle that adjusts the flow of fertilizer. The dial setting is from 0 to 10. He has learned that if he sets

Algebra ->  Inequalities -> SOLUTION: Sam bought a new fertilizer spreader for his yard. It has a dial on the handle that adjusts the flow of fertilizer. The dial setting is from 0 to 10. He has learned that if he sets      Log On


   

Question 1063999: Sam bought a new fertilizer spreader for his yard. It has a dial on the handle that adjusts the flow of fertilizer. The dial setting is from 0 to 10. He has learned that if he sets the dial to 10, then one bag of fertilizer will cover only 600 square feet of his yard. The setting varies inversely with the area it will cover. How many square feet should one bag cover if the dial is set at 6?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
d, the dial setting
s, amount of area that one bag covers
k, proportionality constant

The setting varies inversely with the area it will cover.
highlight_green%28d=k%2Fs%29


If d=10, then s=600. First use this to find k.
-
d=k%2Fs
k%2Fs=d
k=s%2Ad
-
k=600%2A10
k=6000
-
Formula should be d=6000%2Fs

Equivalent to sd=6000
highlight%28s=6000%2Fd%29

Now what is s if d is 6?