Answer the following:

You have a $5000-$ton system that is designed for $16$ degrees F chilled water temperature range, which has a flow of $7500$ gpm and $155$ feet of head pressure. If you change the temperature range from $16$ degrees F to $14$ degrees F$,$ what is the new gpm flow? Show your work!

What formula do you need to use to make the calculation in question $1?$

If a large chilled water plant has $6$ chillers and $5$ of them are operating at $100\%,$ when the operator starts the $6$th chiller, to what percent do the first $5$ chillers unload?

What formula do you need for the calculation in question $3?$