If a business had a capacity of $10,000,000 of sales, actual sales of $6,000,000, break-even sales of $4,200,000, fixed costs of $1,800,000, and

If a business had a capacity of $10,000,000 of sales, actual sales of $6,000,000, break-even sales of $4,200,000, fixed costs of $1,800,000, and variable costs of 60% of sales, what is the margin of safety expressed as a percentage of sales?