Please explain all the requirements if possible. Prioritize solving requirement 3 please!

Chartz 1-2-3 is a top-selling electronic spreadsheet product. Chartz is about to release version 5.0. It divides its customers into two groups: new customers and upgrade customers (those who previously purchased Chartz 1-2-3, 4.0 or earlier versions). Although the same physical product is provided to each customer group, sizable differences exist in selling prices and variable marketing costs: (Click the icon to view the price and cost information.) The fixed costs of Chartz 1-2-3 5.0 are $16,500,000. The planned sales mix in units is 60% new customers and 40% upgrade customers. Read the requirements. Requirement 1. What is the Chartz 1-2-3 5.0 breakeven point in units, assuming that the planned 60%/40% sales mix is attained? Begin by determining the sales mix. For every bundle, units are sold to new customers, and units are sold to customer who bought upgrades. Determine the formula used to calculate the breakeven point when there is more than one product sold, then enter the amounts in the formula to calculate the breakeven point in bundles. The breakeven point is units for new customers and units for upgrade customers. Requirement 2. If the sales mix is attained, what is the operating income when 170,000 units are sold? Nownietamare IInnrado riletamore Total Chartz 1-2-3 is a top-selling electronic spreadsheet product. Chartz is about to release version 5.0. It divides its The breakeven point is units for new customers and units for upgrade customers. Requirement 2. If the sales mix is attained, what is the operating income when 170,000 units are sold? Requirement 3. Show how the breakeven point in units changes with the following customer mixes: a. New 40% and Upgrade 60% and b. New 80% and Upgrade 20%. a. Begin by determining the sales mix for scenario "a". For every bundle, units are sold to new customers, and units are sold to customers who bought upgrades