a construction firm wants to hire electricians and electrician aides to meet the schedule at minimum cost. the average annual salary is 35,000 for electrician and 18,000 for electrician aides. the project manager can hire up to 50 people least 20 to function properly. the foreman wants at least 12 aides but the number of electrician must be at least twice the number of aides to meet labor regulations. how many electrician and electrician aide should be hired to minimize salary