I need help on how to solve these

Sales total $400,000 when variable costs total $300,000 and fixed costs total $50,000. The breakeven point in sales dollars is Formulas: Breakeven Units = $ Fixed Items/$ Contribution Margin Value per Unit Breakeven $ Revenue = $ Fixed Items/% Contribution Margin per cent $200,000 $120,000 $170,000 $210,000