Please answer and show work for question 16

A company has contribution margin per unit of $90 and a contribution margin ratio of 30%. What is the unit selling price? $300 ABC, Inc. makes and sells widgets. Each widget uses 1/4 pound of glop. Budgeted production of buckets in units for the next three months is as follows: The company wants to maintain monthly ending inventories of glop equal to 30% of the following month's budgeted production needs. The cost of glop is $1.10 per pound. Prepare a direct materials purchases budget for the month of Feb. Know how to calculate contribution margin