Estimate the maximum and minimum design wastewater flow rates from a $65-$ha residential development that

when fully developed will consist of $10\%$ large lots $(6$ persons$/$ha$),75\%$ small single$-$family lots $(75$ persons$/$ha$),$ and

$15\%$ small two$-$family lots $(125$ persons$/$ha$).$ The average wastewater flow rate when the sewers are first installed is

expected to be $30\%$ of the average wastewater flow rate when the area is fully developed. Assume an average percapita flow rate of $350($L$/$d$)/$person$.$ Neglect I$/$I$.$