Farah's Business Yielded a Net Profit Margin of 10

Multiple Choice

Farah's business yielded a net profit margin of 10.2% in the financial year 20X5.Her expenses were £101 440 and revenue were £447 200. What was Farah's gross profit margin for the 20X5 financial year (to one decimal place) ?

A) 29.3%
B) 32.9%
C) 22.7%
D) 20.4%