$1)18-\%$ Cost Volume Profit$-$Show your calculations, how you arrived at your answer.

A company has a selling price of $$30$ per unit, variable costs of $$10$ per unit and fixed costs of $$50,000.$

a$.4\%-$ What quantity must be sold to earn a profit of $$80,000?$

b$.2\%-$ What is the firm's total contribution margin at breakeven?

c$.4\%-$ How much revenue is needed to make an after$-$tax profit of $$140,000?$ Assume a tax rate of $10\%.$

d$.4\%-$Assume we have been selling $14,000$ units. What is the net income if there is a $10\%$ increase in units sold?

e$.4\%-$ By how much can fixed cost increase, if the firm increases its sales price by $$5$ and wants to make a profit of $$50,000$ by selling $10,000$units?