Two sociologists have grant money to study school busing in a particular city. They wish to conduct an opinion survey using 628 telephone contacts and 372 house contacts. Survey company A has personnel to do 33 telephone and 11 house contacts per hour; survey company B can handle 27 telephone and 17 house contacts per hour. How many hours should be scheduled for each firm to produce exactly the number of contacts needed?
How many hours should be scheduled for Firm A and Firm B to produce exactly the number of contacts needed?
How many hours should be scheduled for Firm A and Firm B to produce exactly the number of contacts needed?