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 ->  Equations -> 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 751598: 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 500 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 4?
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
Formula Setting = k/ Area (k is constant of variation)
Work out what k is.
10 = k/ 500
Therefore k = 5000
Formula => Setting = 5000/ Area
4 = 5000/ Area
Area covered = 5000/4
= 1250 square feet