A farmer is growing corn. For every 4 seeds he plants, he gets one ear of corn, that he can sell for $.1. It costs $.5 for a bag with 100 seeds. If he makes $40 in profit, how many ears did he sell? Let's think step by step and output the final answer after "####".
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A single seed costs $.005 because .5 / 100 = <<.5/100=.005>>.005
It costs $.02 cents to grow an ear of corn because .005 x 4 = <<.005*4=.02>>.02
On each ear of corn he makes $.098 profit because .1 - .02 = .08
He sold 500 ears because 40 / .08 = <<40/.08=500>>500
#### 500
A farmer is growing corn. For every 4 seeds he plants, he gets one ear of corn, that he can sell for $.1. It costs $.5 for a bag with 100 seeds. If he makes $40 in profit, how many ears did he sell?
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