The charge for a single room at Hotel P is 20 percent less than the charge for a single room at Hotel R and 10 percent less than the charge for a single room at Hotel G. The charge for a single room at Hotel R is what percent greater than the charge for a single room at Hotel G ? Choose the correct choice from the following choices
A) 15%  B) 20%  C) 12.5%  D) 50%  E) 150%
Let rate in R = 100x   then P = 80x   G = 100y   P = 90y   Thus   80 x=90y   or x = 1.125 y   Ans R = 112.5y   so increase = 12.5%   Answer: 12.5%
<result>C</result>
The charge for a single room at Hotel P is 20 percent less than the charge for a single room at Hotel R and 10 percent less than the charge for a single room at Hotel G. The charge for a single room at Hotel R is what percent greater than the charge for a single room at Hotel G ?