All I have left are these four on my homework this week. I am struggling with these because I think I am using teh wrong formula. Would anyone like to help me with these? Thanks so much.

Grover Company has the following data for the production and sale of 1,300 units Sales price per unit Fixed costs: $ 700 per unit Marketing and administrative Manufacturing overhead $540,000 per period $214,500 per period Variable costs Marketing and administrative Manufacturing overhead Direct labor Direct Materials $70 per unit $100 per unit $115 per unit $180 per unit What is the prime cost per unit $115 O s280 O $295 $560