There are 31283 kg of steel in stock A new part uses 1600 mg

There are 312.83 kg of steel in stock. A new part uses 1600 mg of steel. If30 of these parts are produced , how much steel is left in stock. In kg

steel in stock = 312.83 kg

A new part uses 1600 mg of steel

Steel used by a single part in kg = 1600*10^(-6) Kg =1/625Kg

30 of these parts are produced So Total used steel in this process = 30*(1/625) =0.048Kg

Steel left in stock = total steel - Steel used by all parts = 312.83 -0.048 =312.782 Kg