Answer:
Explanation:
To find the size of a container that can measure the milk in exact times from each of the given containers (140L, 260L, and 420L), we need to determine the greatest common divisor (GCD) of these three numbers. The GCD will represent the size of the container that can evenly measure the milk from each container.
The GCD of 140, 260, and 420 is 20.
Therefore, a container size of 20L can measure the milk in exact times from each of the containers: 140L / 20L = 7 times, 260L / 20L = 13 times, and 420L / 20L = 21 times.