Harriet worked out five times last week Each day, she ran on the treadmill and then walked for 20 minutes. She ran on the treadmill for the same amount of time each day. If she worked out for a total of 265 minutes, how much time was spent on the treadmill running each day?​

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