For this case what you can do is the following rule of three: m ---> 100% x ----> 115% Clearing the value of x we have: x = (115/100) * (m) x = 1.15 * (m) Answer: a simplified expression to represent the number of members this year is: x = 1.15 * (m)
If you want to take away 25%, you would need to find out how much 75% of the current price is. IF you think about it, 75% of the $495 is 25% of 100% of it taken away.