30% loss on cost price in what percent loss on selling price?	Choose the correct option.
A) 28.44 %  B) 38 %  C) 40.35 %  D) 42.85 %  E) None
Sol.   Loss = 30% on CP i.e., 0.3CP ⇒ SP = 0.7CP Loss % on   SP = loss/SP * 100 = 0.3CP/0.7CP * 100 = 42.85%.   Answer 42.85 %
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30% loss on cost price in what percent loss on selling price?