As a musician Mary plans to use JC Music Cos service for rec

As a musician, Mary plans to use JC Music Co.’s service for recording drum sound in her songs. She can use either drum machines or drummers, and they can substitute three drummers with one drum machine. The cost of hiring a drummer is $8 per hour and the rental cost of a drum machine is $12 per hour. To minimize the cost of recording 120 songs (q = 120), how many drummers (L) and drum machines (K) should she use?

Solution

She will use only drum for recording.Because the substitution rate is 1 drum = 3 drummer. since the cost of 1 drum is $12 where as the cost of drumer is $24.