Tanner is getting balloons for his mother's birthday party. He wants each balloon string to be 6 feet long. At the party store, string is sold by the yard. If Tanner wants to get 57 balloons, how many yards of string will he need?

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