Problem Solving

A pharmaceutical company received $3 million in royalties on the first $ 20 million in sales of the generic equivalent of one of its products and then $9million in royalties on the next $ 108 million in sales. By approximately what percent did the ratio of royalties to sales decrease from the first $ 20 million in sales to the next $108 million in sales?

45%

1. $3 million in royalties on the first $ 20 million in sales i.e. 15%
2. $9million in royalties on the next $ 108 million in sales i.e. 8.33%

approximate percent, the ratio of royalties to sales decrease
= 15- 8.33 / 15 * 100
= 6.66 / 15 * 100
approx 45%

please use the spoiler for the answers.
you have not provided any options for the questions posted...
instead an answer directly...
sorry to say...but mind start working in the direction of the answer given...
Thanks!!!