Question

The line graph shows the time spent by people visiting the

Department of Motor Vehicles to renew their driver's license during
their birth month. To the nearest minute, what is the average waiting
time for all the months shown on the graph?
A)
18 minutes
B)
29 minutes
C)
37 minutes

D)
41 minutes

Answer 1

Option (B)

Explanation:

Average waiting time in the month of October = 20 minutes

Average waiting time in the month of November = 30 minutes

Average waiting time in the month of December = 60 minutes

Average waiting time in the month of January = 40 minutes

Average waiting time in the month of February = 10 minutes

Average waiting time in the month of March = 10 minutes

Average waiting time in the month of April = 30 minutes

Average waiting time in the month of May = 40 minutes

Average waiting time in the month of June = 20 minutes

Total waiting period from October to June = 20 + 30 + 60 + 40 + 10 + 10 + 30 + 40 + 20 = 260

Average waiting period =
`(260)/(9)`

= 28.89

≈ 29 minutes

Option (B) is the answer.