a package delivery company has determined that they can meet their schedules if they have 4 drivers for every 30 square miles of area they cover. if they want to offer service to a county of 75 square miles, how many drivers must they have
4 / 30 = x / 75...4 drivers to 30 sq miles = x drivers to 75 sq miles cross multiply (30)(x) = (75)(4) 30x = 300 x = 300/30 x = 10 <== 10 drivers for 75 sq miles
