If the selling price is septuple,the profit is octupled,what is the percentage of profit?? Choose the correct choice from the following options.
A) 50%  B) 100%  C) 150%  D) 200%  E) 250%
we can make two equations from the given info..   let selling price be S and cost price be C..   so profit=P=S-C...   if S is doubled profit is tripled..   so 8P=7S-C..   or S=7P...   therefore C=P..   % of profit=P/P=100%   100%
<result>B</result>
If the selling price is septuple,the profit is octupled,what is the percentage of profit??