A scale model of a race car is 18.2 cm long and 6.9 CM wide. Each centimeter on the model represent 0.3 M on the actual car. How long is the actual car?

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