Part III. Compute for the missing amount The total maintenance costs of Silver Company in the last four months are presented below: Month Machine hours January 7,200 February 6,800 March 7,000 April 6,400 Maintenance cost P450,000 P422,000 P440,000 P418,000 11. Variable cost per machine hour 12. Total fixed cost 13. Budgeted maintenance cost in May if the company is planning to use 7, 500 hours. 14. Budgeted maintenance cost in May if the company is planning to use 8,000 hours. PART IV. Hagler's has the following machine hours and production costs for the last six month of last year: Month Machine Hours July 15,000 August 13,500 September 11,500 October 15,500 November 14,800 December 12, 100 Production Cost P12,075 P10, 800 P9, 580 P12, 080 P11, 692 P9, 922 15. Compute the variable rate per machine hour 16. Compute the fixed amount of the production cost 17. Compute the total production cost using 17, 500 machine hours. PART V. Norton Company's manufacturing costs for 2009 were as follows: Direct materials, P300, 000; Direct labor - P400, 000; Factory ove variable - P80, 000 and fixed - P50,000. 18. Prime cost 19. Conversion cost