Manufacturing overhead is applied on the basis of machine hours. At standard, each unit of proctuat se

a$)$ The denominator activity level is $160,000$ units. What are the predetermined varnate

b$)$ Actual data for the year were as follows:

$\backslash$table$[[$Actual variable manufacturing overhead cost,$],[$Actual fixed manufacturing overhead cost,$],[$Actual machine hours incurred,$],[$Units produced,$]]$