A soccer field is 9000 square yards. The soccer field takes up 6 and 2/5 square inches on the map of the park. How many square yards does one square inch on the map represent

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