SOLUTION: a rectangular garden is 20 ft by 6 ft. Each jar of fertilizer cost $19.98 can fertilizer 500 in2. How much does it cost to fertilizer the garden?

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Question 769786: a rectangular garden is 20 ft by 6 ft. Each jar of fertilizer cost $19.98 can fertilizer 500 in2. How much does it cost to fertilizer the garden?
Answer by josgarithmetic(39613) About Me  (Show Source):
You can put this solution on YOUR website!
Use inches and square inches. One foot is twelve inches.

Garden area is %2820%2A12%29%2A%286%2A12%29=120%2A144=17280 in%5E2

Cans of fertilizer: 17280%2F500 in%5E2%28cans%2Fin%5E2%29
which is a nonwhole amount of cans. Decide if you want 34 cans or 35 cans. My opinion, is 34 cans would be enough; no need to use the higher whole can quantity.
The cost:
34%2A19.98=highlight%28679.32%29 cans%2A%28dollars%2Fcans%29