DE22-9 Consider the Grand Canyon Railway example from the chapter opening story. Suppose the railway decides to oller only one class of service. Coach class, at an all-inclusive round-trip ticket price of $55 per passenger. Assume variable expenses of $15 per passenger. Il Grand Canyon has $250,000 of fixed expenses per month, compute the number of round- trip tickets it must sell to break even:

a. Using the income statement equation approach

b. Using the shortcut contribution margin CVP formula Perform a numerical proof to ensure that your answer is correct.