Level:
Project ID:
1003029705
Accepted:
1
In a tank, there are \( 60 \) litres of \( 2\% \) saline solution. How much water must evaporate to increase salt concentration into \( 3\% \)?
\( 20 \) litres
\( 40 \) litres
\( 1.8 \) litres
\( 58.2 \) litres