Question

2. The probability that a city bus is ready for service when needed is 77%. The probability that a city bus is ready for service and has a working radio is 67%. Find the probability that a bus chosen at random has a working radio given that it is ready for service. Round to the nearest tenth of a percent.


11.5%
91.4%
87%
10.0%

Answer 1

87 and 91 seem a little high don't they?

Answer 2

yeah

Answer 3

So to the nearest tenth the only one plausible for that has to be 10.0%?

Answer 4

yeah wow that seemed easy

Answer 5

lol