3. ABC has a single product whose selling price is $100 and whose variable expense is $60 per unit. The company's monthly fixed expense is $50,000. Required: 1. Using the equation method, solve for the unit sales that are required to earn a target profit of $10,000. 2. Using the formula method, solve for the dollar sales that are required to earn a target profit of $30,000 1. The equation method yields the required unit sales, Q, as follows: 2. The formula approach yields the required unit sales as follows