Two manufacturing companies located in cities 90 miles apart, have discovered that they both send their trucks four times a week to other city full of cargo and return empty. each company pays its driver $185 a day (the round trip takes all day) and have truck operating costs (excluding the driver) of 60 cent a mile.How much could EACH company save each week if they shared the task? with each sending its track twice week and hauling the other company's cargo on the return trip?