HELP PLEASE !!!!!!!!!!!!

A florist has to order roses and carnations for Valentine’s day. The florist needs to decide how many dozen roses and carnations should be ordered to obtain a maximum profit.

• Roses: The florist’s cost is $20 per dozen;
the profit over cost is $20 per dozen.
• Carnations: The florist’s cost is $5 per
dozen; the profit over cost is $8.
• The florist can order no more than 50 dozen
flowers.
• A minimum of 30 dozen carnations must be
ordered.
• The florist cannot order more than $660
worth of roses and carnations.

A.) How many dozen roses should the florist order? Answer in units of doz

B.) How many dozen carnations should the florist order? Answer in units of doz