please answer the questions that are marked wrong with evidence thank you

Product-Casting Accuracy, Plantwide and Departmental Rates, ABC Escuha Company produces two type of calculators: scientific and business. Both products pass through two producing departments. The business calculator is by far the most popular. The following cata have been gathered for these two products: Product-Related Data Scientific Business Units produced per year 78,000 780,000 Prime costs $249,000 $2,490,000 Direct labor hours 102,500 1,025,000 Machine hours 48,700 487,000 Production runs 100 150 Inspection hours 2,000 3,000 Maintenance hours 2,250 9,000 Department Data Department 1 Department 2 Direct labor hours: Scientific calculator 77,700 24,800 Business calculator 143,500 881,500 Total 221,200 906,300 Machine hours: Scientific calculator 22,300 26,400 Business calculator 361,260 125,740 Total 383,560 152,140 Overhead costs: Setup costs $213,000 $213,000 Inspection costs 170,000 170,000 Power 251,000 148,000 Maintenance 187,000 251.750 Total $821,000 $782.750 Required: 1. Compute the overhead cost per unit for each product using a plantwide, unit-based rate using direct labor hours, Round your calculations and answers to the Plantide rate 1.42 per direct labor hour Overhead cost per unit: Scientific 2 x per unit Business 2 X per unit 2. Compute the overhead cost per unit for each product using departmental rates. In calculating departmental rates, use machine hours for Department 1 and direct labor hours for Department 2. Round departmental rates and the overhead cost per unit to the nearest cent if rounding is required. Departmental rates: Department: 2.14 per machine hour Department 2 0.86 per direct labor hour Overhead cost per unit: Scientific 0.89 per unit Business 2 X per unit Repeat using direct labor hours for Department i and machine hours for Department 2. Round departmental rates and the overhead cost per unit to the nearest cent if rounding is required. Departmental rates: Department 3.71 per direct labor hour Department 2 5.14 per machine hour Overhead cost per unit Scientific 5.44 per un Business 1.51 per unit 3. Compute the overhead cost per unit for each product using activity-based costing, Round your calculations and answers to the nearest cent. Overhead Cost Scientific X per unit Business X per unit