I’m thinking of a number between 1 and 100. Multiply it by 8. Then subtract five from the product. The result is 59. What was my number? Use an equation and inverse operations to find out.

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