Question

The probability that the bus is late on Monday is 20%, and the probability that the bus is late on Tuesday is 10%. What is the probability that the bus will be late on both days? Express your answer as a decimal rounded to the nearest hundredth.

Answer 1

Add 20% and 10% (30%). Then, because it is two days combined, it would be 30% of 200. Divide each by 2, and there is your answer. 

The probability that the bus will be late on both days is: 15%.