It takes 3 city snowplows 14 hours to clear 500 miles of road. If the city wants the 500 miles of ro

It takes 3 city snowplows 14 hours to clear 500 miles of road. If the city wants the 500 miles of road to be cleared in 6 hours, how many additional snowplows must they buy?

Set up unit rate per plow:
14 hours * 3 plows = 42 hours for one plow to clear 500 miles of road

Calculate the amount of plows we need:
42 hours / 6 hours = 7 plows

Additional plows = New plows - original plows:
Additional plows = 7 - 3
Additional plows = 4