## Task 2 - 200622

An empty rectangular water basin is $22 \mathrm{~m}$ long, $6 \mathrm{~m}$ wide, and $2 \mathrm{~m}$ deep. When filling the basin, $900 \mathrm{l}$ of water flows into the basin every minute.

After what time will the basin be filled to a height of exactly $1.50 \mathrm{~m}$?

We assume that the bottom of the water basin is exactly horizontal.
Due to $22 \cdot 6 \cdot 1.5=22 \cdot 9=198$ the pool filled to a height of $1.50 \mathrm{~m}$ contains $198 \mathrm{~m}^{3}$ of water. Since $1 \mathrm{~m}^{3}=1000 \mathrm{~l}$, the pool thus contains $198000 \mathrm{~l}$ of water. Due to $198000: 900=220$, it is therefore filled to the specified height after exactly 220 minutes.