Swimming 6649

How long will the swimming pool be 20 m long, 12 m wide, and 2 m deep? Two inlets are used for filling, each filling nine hectoliters of water per minute.

Correct answer:

t =  533.3333 min

Step-by-step explanation:

$$\begin{gathered} a=20\text{m} \\ b=12\text{m} \\ c=2\text{m} \\ {V}_2=9\text{hl} \\ V=a\cdot b\cdot c=20\cdot 12\cdot 2=480{\text{m}}^3 \\ {V}_1=V\to \text{hl}=V\cdot 10\text{hl}=480\cdot 10\text{hl}=4800\text{hl} \\ t=V_1/V_2=4800/9=533.3333\text{min} \end{gathered}$$

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