PPP, Inc, manufactures calculators that sell for $40 each. Each calculator uses $15 in direct materials and $5 in direct labor per unit. PPP has two activities: Machining, which is applied at the rate of $4 per machine hour, and Finishing, which is applied at the rate of $20 per batch. This month, PPP made 400 calculators, using 1,000 machine hours in 40 batches. What is the total manufacturing cost for one calculator? Select one: O a $25 b. $20 c. $27 O d. $32 PPP, Inc, manufactures calculators that sell for $40 each. Each calculator uses $15 in direct materials and $5 in direct labor per unit. PPP has two activities: Machining, which is applied at the rate of $4 per machine hour, and Finishing, which is applied at the rate of $20 per batch. This month, PPP made 400 calculators, using 1,000 machine hours in 40 batches. What is the total manufacturing cost for one calculator? Select one: O a $25 b. $20 c. $27 O d. $32