If the selling price is hexatrupled, the profit is septupled, what is the percentage of profit??  Choose the correct option.
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 7P=6S-C..   or S=6P...   therefore C=P..   % of profit=P/P=100%   100%
<result>B</result>
If the selling price is hexatrupled, the profit is septupled, what is the percentage of profit??