Muscle Beach, Inc., makes three models of high-performance weight-training benches. Current operating data are summarized here MegaMuscle PowerGym ProForce $ 141 39 2,920 $293 58 960 $ 204 Selling price per unit Contribution margin per unit Monthly sales volume-units Fixed expenses per month 2,020 Total of $326,700 a. Calculate the contribution margin ratio of each product. (ROund your answers to 1 decimal place MegaMuscle PowerGym ProForce Contribution margin ratio 277:% 37.7% 19.8% b. Calculate the firm's overall contribution margin ratio. (Round your answer to 1 decimal place.) Overall CM ratio c. Calculate the firm's monthly break-even point in sales dollars. (Round your intermediate calculations to 1 decimal place.) Break-even point d. Calculate the firm's monthly operating income Operating income