The ants will need 800 ounces of food because 400 x 2 = <<400*2=800>>800
The ant food will cost $80 because 800 x .1 = <<800*.1=80>>80
He has earned $60 from the leaves he has raked because 6000 leaves * $0.01/leaf = $<<6000*0.01=60>>60
He earned $20 from all his jobs because 80 - 60 = <<80-60=20>>20
He completed 4 jobs because 20 / 5 = <<20/5=4>>4
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