In a 12-hour period of time, a drawbridge opens 8 times, holding traffic for 15 minutes each time. If a car approaches the bridge during this 12-hour time, find the probability that the bridge is open.
In a 12-hour period of time, a drawbridge opens 8 times, holding traffic for 15 minutes each time. If a car approaches the bridge during this 12-hour time, find the probability that the bridge is open.
open 8 times for 15 minutes each time
makes a total of open for 120 minutes, which is 2 hours
2
in the 12 hour period, the bridge is open —–— of the time
12
2
i think this means the probability of finding the bridge open is —–—
12
1
this is —– or in decimal form, 16.67
6
