12 people went to the circus together. 3 of the people are children and cost 3/10 less than the regular price. if the cost of admission for a regular price ticket is $24, how much did the group spend altogether on tickets?

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