There are a total of 82 students in a drama club and a yearbook club. The drama club has 18 more students than the yearbook club. How many students are in the drama club? the yearbook club?

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters