If you could answer 1&2 Thanks!!!

The total sales and cost information is based on the sale of 20,000 units. Total Per Unit Sales $570,000 $28.50 Variable costs $387, 600 $19.38 Fixed costs $140,000 a) compute the total contribution margin b) compute contribution margin ratio c) compute unit contribution margin for this company d) compute the increase in net income that will result from a $50,000 increase in sales e) compute the increase in net income that will result from a 1,000-unit increase in sales Douglas Company has a contribution margin ratio of 30%. If Douglas has $336, 420 in fixed costs, sales will need to be generated in order for the company to break even