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I have to cover a lawn that is 15ft by 40 ft. one pound bag covers 100 sq feet and the seed is sold in 5lbs bags, how many bags will he nned?

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1 Answer

The area of the lawn is (15 feet)x(40 feet) = 600 square feet
 
If the seed is only sold in 5 lbs bags, and each pound covers 100 sq feet, then one 5 pound bag covers an area = (100sq ft per lbs)x(5 lbs) = 500 sq feet
 
So you'll need two 5 lbs bags, but will use only one pound out of the second bag.  Ideally, get one 5 lbs bag and one 1 lbs bag.