Exercise 7: Specific Gravity A 50,000-barrel cargo of oil is found to be 7,143 tons weight. The specific gravity of the oil is 0.933 kg oil/kg water. How many tons of fresh water would there be in the same volume? Answer in the variable water_equivalent. Your answer should be an int so you'll need to use floor division // and convert. [70]: #grade wt_oil = 7143 sg = 0.933 #kg oil/kg H20 water_equivalent = int(wt_oil//sg)