Ocean Cruiseline offers nightly dinner cruises departing from several cities on the East Coast of the United States including Charleston, Baltimore, and Alexandria. Dinner cruiso tickets sell for $50 per passonger. Ocean Cruiseline's variable cost of providing the dinner is $20 per passenger, and the flxod cost of operating the vessels (depreciation, salaries, docking fees, and other expenses) is $210,000 per month. The company's relevant range extends to 17,000 monthly passengers Compute the number of dinner cruise tickets Ocean Cruiseline must sell to break even and the sales dolfars needed to broak even. Compute the number of dinner cruise tickets Ocean Cruiseline must sell to break even. Use the shortcut unit contribution margin appraach. First, identify the formula, then compute the breakeven sales in units, (Complete all input fields. For amounts with a $0 balance, make sure to enter "0" in the oppropriate input field.) Compute the sales dollars needed to break even. Use the shortcut unit contribution margin ratio approach. First, identify the formula, then compute the breakeven sales in dollars. (Complete all input fields. For amounts with a $0 balance, make sure to enter " 0 " in the annronriate inout field. Enter the contribution margin ratio as a whole percent.)