If they use a mark up percentage of 120% of its total manufacturing cost, then what selling price per unit would it have established?

i cannot figure out how to calculate this! can someone explain? thank you!

Selling price per unit 154,000 $ 656,000 $ 4.90 Machine-hours required to support estimated production Fixed manufacturing overhead cost Variable manufacturing overhead cost per machine hour Required: 1. Compute the plantwide predetermined overhead rate. 2. During the year, Job 400 was started and completed. The following information was available with respect to this job: Direct materials Direct labor cost Machine-hours used $ 300 $ 230 33