$0\mathrm{.}15$ points

Solve the problem below $($show your work$)$

$1-$ Suppose that the purchase price for a piece of equipment is $$15,000,$ with operational costs of $$500$ per day. If the same equipment can be leased for $$600$ per day $($inclusive of operational costs$),$ after how many days will the lease cost equal the purchase cost?

$2-$ At what condition each option will be preferable? $($when we select Lease and when we select Buy?$)$