4. An investor is considering starting a book trading business.

 The variable cost is estimated at $250 per unit, while the selling price is sedang is twice the VC/unit. Fixed costs are estimated at $750,000, and investors will open the business if the project generates operating income

$500,000 or more.

Requested:

 a) What is the sales volume that must be achieved if you want to achieve the profit target? that?

 b). Mention the assumptions used in the cost-volume-profit analysis above! c). Discuss the concept of operating leverage with concrete illustrations to make it easier your explanation!