Campbell, tre sold 130.000 units last year for $5.00 sach Variable costa per unit were $1.75 for direct materials, 5100 for direct libo and $25 for variable overhead, Fixed costs were $39,000 in manufacturing overhead and $19,000 in nonmanufacturing costs a. What is the total contribution margin? b. What is the unit contribution margin? (Round your answer to 2 decimal places) Una con un c. What is the contribution margin rento? (Round your intermediate calculations to 2 decimai places) DOBRA dh. I stes increase by 36,000 units, by how much will protes Increie? (ound your intermediate calculations to 2 decimal places