Question

Открыли кран, из которого в течении минуты вытекает 20 литров воды, и за 8 минут наполнили ванну. Потом кран закрыли и открыли сливное отверстие, через которое вся вода вытекла за 4 мин. Сколько литров воды вытекало за минуту.

Answer 1

20*8=160 л наполнили ванну
160:4=40 литров вытекло за минуту

Answer 2

1)20литров х 8 минут= 160 литров 2)160 литров : 4 минуты = 40 литров

Answer 3

Calculation of Water Flow Rate

To calculate the flow rate of water, we need to determine the volume of water that flowed out of the tap in 1 minute.

Given: - The tap released 20 liters of water in 1 minute. - The bathtub was filled in 8 minutes. - The drain released all the water in 4 minutes.

To find the flow rate of water, we can subtract the volume of water drained from the volume of water filled in the bathtub, and then divide it by the time taken to drain the water.

Let's calculate the flow rate step by step:

1. Calculate the volume of water filled in the bathtub: - The bathtub was filled in 8 minutes. - Therefore, the volume of water filled in the bathtub is 8 times the flow rate of water from the tap. - Volume of water filled in the bathtub = 8 * 20 liters = 160 liters.

2. Calculate the volume of water drained: - The drain released all the water in 4 minutes. - Therefore, the volume of water drained is 4 times the flow rate of water from the tap. - Volume of water drained = 4 * 20 liters = 80 liters.

3. Calculate the flow rate of water: - Flow rate of water = (Volume of water filled - Volume of water drained) / Time taken to drain the water. - Flow rate of water = (160 liters - 80 liters) / 4 minutes = 20 liters per minute.

Therefore, the flow rate of water from the tap was 20 liters per minute.