$3$

$6$ points

$80\mathrm{.}16$:$43$

References

The Avis Company is a car rental company and is located three miles from the Los Angeles airport $($LAX$).$ Avis is dispatching a bus from its offices to the alrport every $2$ minutes. The average traveling time $($a round trip$)$ is $22$ minutes.

a$.$ How many Avis buses are traveling to and from the airport? Note: Round your answer to the nearest whole number.

Number of Avis buses

b$.$ The branch manager wants to improve the service and suggests dispatching buses every $0\mathrm{.}5$ minute. She argues that this will reduce the average traveling time $($a round trip$)$ to $2\mathrm{.}5$ minutes. Is she correct? If your answer is negative, then what will the average traveling time be$?$

$,$ average traveling time is

minutes