A pharmaceutical company received $5 million in royalties on the first $25 million in sales of generic equivalent of one of its products and then $10 million in royalties on the next $100 million in sales. By approximately what percent did the ratio of royalties to sales decrease from the first $25 million in sales to the next $100 million in sales?	Choose the correct choice from the following choices.
A) 50%
B) 65%
C) 70%
D) 75%
E) 80%
change in ratio of royalties to sales = 5/25 -10/100 = 1/10   % decrease = (1/10)/(5/25) *100= 
<gadget id="calculator">(1/10)/(5/25) *100</gadget>
<output>50</output>
50%   50%nswer: 50%)
<result>A</result>
A pharmaceutical company received $5 million in royalties on the first $25 million in sales of generic equivalent of one of its products and then $10 million in royalties on the next $100 million in sales. By approximately what percent did the ratio of royalties to sales decrease from the first $25 million in sales to the next $100 million in sales?