The following information is available regarding the total manufacturing overhead Bursa Mfg. Co. for recent four-month period.

Machine-HoursManufacturing Overhead

January5,200$310,000

February3,200224,000

March4,900263,800

April2,700190,000

a-1 Use the high-low method to determine the variable element of manufacturing overhead costs per machine -hour. (Round your answer to 2 decimal places.)

a-2. Use the high-low method to determine the fixed element of monthly overhead cost.

b. Bursa expects machine-hours in May to equal 5,300. Use the cost relationships determined in part a to forecast May's manufacturing overhead costs.

c. Suppose Bursa had used the cost relationships determined in part a to estimate the total manufacturing overhead expected for the months of February and March. By what amounts would Bursa have over - or underestimated these costs?

a-1. Manufacturing overhead cost per machine hour

a-2 Fixed element of monthly overhead cost

b. Estimated manufacturing overhead cost

c. FebruaryAmount

March