SOLUTION: An office worker is allowed to take three 10-minute coffee breaks over the course a normal work day, which last from 9.am to 5p.m at randomly chosen times. If someone tried to ask

Question 1141560: An office worker is allowed to take three 10-minute coffee breaks over the course a normal work day, which last from 9.am to 5p.m at randomly chosen times. If someone tried to ask the office worker at a random time during the work day, what is the probability that the worker will be on a coffee break?
A)1/6
B) 1/8
C)1/4
D)3/4
Answer by ikleyn(52788) (Show Source): You can put this solution on YOUR website!
.
An office worker is allowed to take three 10-minute coffee breaks over the course a normal work day,
which lasts from 9.am to 5p.m at randomly chosen times.
If someone tried to ask the office worker at a random time during the work day, what is the probability
that the worker will be on a coffee break?
A)1/6
B) 1/8
C)1/4
D)3/4
~~~~~~~~~~~~~~~~~

The total duration of the three coffee breaks is 3*10 minutes = 30 minutes.


The total working day duration is 8 hours from 9 am to 5 pm,  or  8*60 = 480 minutes.


The probability under the question is   = .

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No one of the given options fits the answer -- but it is not my trouble -- it is YOUR trouble as a person
who posted incorrect answer options.

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