An automobile manufacturer is preparing a shipment of cars and trucks on a cargo ship that can carry 21,600 Tons.
The cars weigh 3.6 tons each and the trucks weigh 7.5 tons each.
For yet another shipment, the manufacturer is
also shipping motorcycles, which weigh 0.3
tons each.
Write an equation you could enter into a calculator or a spreadsheet tool to find the number of motorcycles shipped, m, if the number of cars and trucks are known.