W labeled quantity =500mg W weighed sample quantity = 356.5mg f = 0.05015/0.05 =1.003.

T = 18.02 mg/ml

Content =(V0-V supply) *W*T*F/W labeled quantity /W weighed sample quantity * 100%.

=(39.94-23.04)* 1.003* 18.02*576.5/356.5/500/2* 100%

=49.4%