Two identical pumps pumped out 1920 liters of water from the pit.

Two identical pumps pumped out 1920 liters of water from the pit. One of them worked for 8 minutes, and the other for 4 minutes. How many liters of water each pump pumped out.

Total running time of two pumps:

8 + 4 = 12 (minutes)

Let’s find how many liters of water each pump pumps out in 1 minute:

1920/12 = 160 (liters)

Let’s find how much the first pump pumped out in 8 minutes:

160 * 8 = 1280 (liters)

Let’s find how much the second pump pumped out in 4 minutes:

160 * 4 = 640 (liters)

Answer: 1280 and 640 liters.