One 15 pound bag of lawn fertilizer covers 350 square feet. Garden Depot sells full bags of fertilizer for $7.89. What will the cost of enough fertilizer to cover a 42 foot by 80 foot lawn?

Answer 1

Area to be covered = 42(80) or 3360 f^2
number of bags = 3360/350
= 9.6
but you can't buy a partial bag, so he needs 10 bags, which will cost $78.90