Please answer the following question and any explanation necessary.

#6 Amy Rose has a soup shop. She sells a large bowl of soup for $7.50. The variable costs per bowl is $3.50 and her monthly fixed cost amounts to $9,000. What is her contribution margin ratio and breakeven point in sale dollars? #7 Speed School charges $250 per student to prepare and administer written and driving tests. Variable costs are $100 per student which includes trainer wages, study material and gasoline. Fixed costs are a total of $75,000 for the upkeep of the company. How many students does Speed School need in order to breakeven? Did you use the contribution per unit or contribution ratio approach