Direct material costs $2,000,000 - Direct labor costs 1,000,000 - Indirect labor costs 600,000 - production 200000 calculate prime cost per unit ?

Prime cost per unit = $2,000,000 +  1,000,000 /2,000,00

 Prime cost per unit =  $15 per unit 

cost per unit15 $ only   ,

Prime cost per unit:

(Direct material + Direct labor) / production  = (2,000,000 +1,000,000) /200,000 =3,000,000/200,000= $15 per unit.

Prime cost is3000000/200000=15 per unit

cost per unit =18 $ / unit