Pool water flow

Five hundred liters of water will flow into the pool in 5 minutes, and 120 liters of water will flow out of it in 12 minutes. How many liters of water will be added in 1 hour?

Final Answer:

Q =  5400 l/h

Step-by-step explanation:

$$\begin{gathered} Q_1=500/5=100\text{l/min} \\ {Q}_2=120/12=10\text{l/min} \\ t=1\text{h}\to \text{min}=1\cdot 60\text{min}=60\text{min} \\ Q=t\cdot (Q_1-Q_2)=60\cdot (100-10)=5400\text{l/h} \end{gathered}$$

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