Refer to the diagram. If Happy Times Theater charges one price to all customers, then the profit will be:

DemandathappyTimesTheater

DemandathappyTimesTheater

TotalDemand:Q

t

=60060P

t

orP

t

=10.0167Q

t

TotalDemand:Qt=600-60PtorPt=10.0167Qt

Daytimedemand:Q

d

=30040P

d

orP

d

=7.5=.025Q

d

Daytimedemand:Qd=300-40PdorPd=7.5=.025Qd

Nighttimedemand:Q

n

=30020P

n

orP

n

=15.05Q

n

Nighttimedemand:Qn=30020PnorPn=15.05Qn

MC=5