In its budget for next month, McGwire Company has revenues of $500,000, variable costs of $350,000, and fixed costs of $135,000.

a. Compute contribution margin percentage.

b. Compute total revenues needed to break even.

c. Compute total revenues needed to achieve a target operating income of $45,000.

d. Compute total revenues needed to achieve a target net income of $48,000, assuming the income tax rate is 40%.