The weight of 20 liters of milk is 20.6 kg. What is the weight of 50 liters of milk?

1. Let’s solve the problem using proportions. Imagine that the mass of 50 liters of milk is x kilogram. Then the proportion will take the following form:
x = 50 liters,
20.6 kg = 20 liters.
2. Now we apply the “cross” rule to solve this proportion, we get:
20x = 50 * 20.6,
20x = 1030,
x = 1030/20,
x = 51.5 kg.
Answer: as a result of the calculations done, we got that 50 liters of milk will weigh 51.5 kilograms.