PLZ HELP TO SOLVE THESE QUESTIONS

Q1) Fox River Cruise line sells lunch cruise tickets for $50 each. The cost of providing lunch is $30 per ticket and the fixed cost of operating the ships is $100,000 per month. The company can accommodate 20,000 passengers each month. How many tickets must be sold to reach break-even point?

Q2) ABC sells deluxe car washes for $20 per customer. Variable costs are $5 per wash. Fixed costs are $20,000 per month. What would be ABCs net income if 2,000 cars were washed?

Q3) Johns Gym has a monthly target operating income of $24,000. Variable expenses are 60% of sales and monthly fixed expenses are $24,000. What is Johns break-even sale in dollars?

Q4) Sunbucks Coffee sells three small coffees for every one large ones. A small coffee sells for $4 per cup, with a variable cost of $2.00 per cup. A large coffee sells for $6 per cup with a variable cost of $3 per cup. What is the weighted-average contribution margin?