b$.$ A small sewage pumping station is to be built with one pump operating

at a time. Minimum and Maximum discharge is $225\frac{m^3}{?}$ day and

$550\frac{m^3}{?}$ day. Establish wet well capacity and cycle time at minimum and

average flows. The following conditions are to be met.

Pump must run at least $2$min.

Cycle time should not be less than $5$min.

Also calculate the minimum cycle time.