Variable Costing

Norwood Company has the following information for March:

Sales $$530,000$

Variable cost of goods sold $249,100$

Fixed manufacturing costs $84,800$

Variable selling and administrative expenses $47,700$

Fixed selling and administrative expenses $31,800$

Determine the following for Norwood Company for the month of March:

a$.$ Manufacturing margin $

fill in the blank $1$

b$.$ Contribution margin $

fill in the blank $2$

c$.$ Income from operations $

fill in the blank $3$