Her gravel business seems to be performing worse than in previous years. Melanie does not quite understand why. She has the following incomplete data, which s. - believes you can help her complete. Price $ Quantity Quantity per Demanded Supplied Traded Quantity Total Revenue ($) Marginal Revenue ($) Total CostMa ton) 10 200.000 20.000 1,150,090 20 170,000 50.000 1,950.000 30 140.000 80,000 2.630.090 40 110.000 110.000 3.190,000 50 80.000 140.000 2.630.000 60 50.000 170.000 1.950.000 70 20.000 200.000 1 150.000