The mass of oil poured into a railway tank car is 20 tons. What is the capacity of the tank? How much gasoline does such a tank contain?

1) Because the density (tabular data) and the mass of oil are known, you can find the volume of the tank: V = m1 / p1 But first you need to convert 20 tons to kg: 20 * 1000 = 20,000 kg V = 20,000 / 800 = 25 (cubic meters)
2) Because gasoline is poured into the same tank, the volume remains the same: 25 (cubic meters)
3) Find the density of gasoline in the density table and write down the formula for finding the mass of gasoline: V = m2 / p2 => m2 = p2 * V2 = 710 * 25 = 17750 (kg)
Answer: 17750 kg