The probability that Terry buys a sandwich is 0.4.
The probability that Terry gets the bus is 0.7.
Assuming the events are independent, what is the probability that Terry buys a sandwich and gets the bus?

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