well electic mowers of corse, are easier to use and requer little to no maintence, no oil, gas, or needing to greese and fittings. though, with an electric mower, you do have to worry about the electric cord and you cant let your grass get to long or...
I agree, just go with Sears Craftsman. I've had mine for years, and she still cranks up, right away. If you're going with self propelled, be sure to get large rear tires with the front wheel drive. They are much easier to turn, than rear wheel drive....
2) Increasing returns it cost $60 per mower when making either 300 or 400 mowers, but only cost $48 per mower when making 500. Assuming she charges the same price for mowers, her returns are greater (increase) when she produces 500 compared to 300 or...