Pool water filling

They filled the 25 m long, 15 m wide swimming pool with water to a height of 80 cm. How many hectoliters of water did they put in, and how long did it take for the pool to fill if 375 hectoliters flow in 1 hour?

Final Answer:

V =  3000 hl
t =  8 h

Step-by-step explanation:

$$\begin{gathered} a=25\text{m} \\ b=15\text{m} \\ c=80\text{cm}\to \text{m}=80:100\text{m}=0.8\text{m} \\ {V}_1=a\cdot b\cdot c=25\cdot 15\cdot 0.8=300{\text{m}}^3 \\ V=V_1\to \text{hl}=V_1\cdot 10\text{hl}=300\cdot 10\text{hl}=3000\text{hl}=3000\text{hl} \end{gathered}$$

$$\begin{gathered} Q=375\text{hl/h} \\ t=V/Q=3000/375=8\text{h} \end{gathered}$$

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