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If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air

Apackage of orgainc strwberries costs $1.50 while there in season and $2.25 when not in season what the percent increase

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