please help with 4 and 5

Tim's Bicycle Shop sells 21-speed bicycles. For purposes of a cost-volume-profit analysis, the shop owner has divided sales into two categories, as follows Sales Invoice Sales Product Type High-quality Medium-quality Price $1,650 820 Cost Commission $740 $80 20 520 Three-quarters of the shop's sales are medium-quality bikes. The shop's annual fixed expenses are $258,850. n the following requirements, ignore income taxes.) Required 1. Compute the unit contribution margin for each product type 2. What is the shop's sales mix? 3. Compute the weighted-average unit contribution margin, assuming a constant sales mix. 4. What is the shop's break-even sales volume in dollars? Assume a constant sales mix. 5. How many bicycles of each type must be sold to earn a target net income of $125,250? Assume a constant sales mix. Answer is not complete. Complete this question by entering your answers in the tabs below Required 1 Required 2Required 3 Required 4 Required 5 What is the shop's break-even sales volume in dollars? Assume a constant sales mix reak-even sales $ 637,090 volume K Required 3 Required5 >