Margin of safety

a. If Kirwan Company, with a break-even point at $297,000 of sales, has actual sales of $450,000, what is the margin of safety expressed (1) in dollars and (2) as a percentage of sales? 1. fill in the blank ( ) $ 2. fill in the blank( )%

b. If the margin of safety for Kirwan Company was 45%, fixed costs were $1,415,700, and variable costs were 55% of sales, what was the amount of actual sales (dollars)? (Hint: Determine the break-even in sales dollars first.) fill in the blank ( )