Problem $18-6($Algo$)$

Trucks are required to pass through a weighing station so they can be checked for weight violations. Trucks arrive at the station at the rate of $21$ an hour between $7$:$00$ p$.$m$.$ and $9$:$00$ p$.$m$.$ Currently two inspectors are on duty during those hours, each of whom can inspect $15$ trucks an hour. Use Table $18\mathrm{.}4.$

a$.$ How many trucks would you expect to see at the weighing station, including those being inspected? $($Round your answer to $3$ decimal places.$)$

Ls

trucks