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A litre of water evaporates from 6L of sea water containing 4% salt. Find the percentage of salt in the remaining solution.

1 $5 \frac{1}{2} %$ $5\frac{1}{2}\%$
2 $3 \frac{1}{2} %$ $3\frac{1}{2}\%$
33%
4 $4 \frac{4}{5} %$ $4\frac{4}{5}\%$

Answer:- 1

Explanation:-

Solution:

\begin{aligned} Quantity of salt in 6L of sea water, \\ = \frac{(6 \times 4)}{100} = 0.24 \\ Percentage of salt in 5L of sea water, \\ = \frac{(0.24 \times 100)}{5} = 4 \frac{4}{5} % \end{aligned}

$\eqalign{ & {\text{Quantity of salt in 6L of sea water,}} \cr & = \frac{{\left( {6 \times 4} \right)}}{{100}} = 0.24 \cr & {\text{Percentage of salt in 5L of sea water,}} \cr & = \frac{{\left( {0.24 \times 100} \right)}}{5} = 4\frac{4}{5}\% \cr}$

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", "dateCreated": "7/24/2019 10:09:12 AM", "author": { "@type": "Person", "name": "Nitin Sir" } }, "suggestedAnswer": { "@type": "Answer", "text": "

Solution:

\begin{aligned} Quantity of salt in 6L of sea water, \\ = \frac{(6 \times 4)}{100} = 0.24 \\ Percentage of salt in 5L of sea water, \\ = \frac{(0.24 \times 100)}{5} = 4 \frac{4}{5} % \end{aligned}

$\eqalign{ & {\text{Quantity of salt in 6L of sea water,}} \cr & = \frac{{\left( {6 \times 4} \right)}}{{100}} = 0.24 \cr & {\text{Percentage of salt in 5L of sea water,}} \cr & = \frac{{\left( {0.24 \times 100} \right)}}{5} = 4\frac{4}{5}\% \cr}$ ", "dateCreated": "7/24/2019 10:09:12 AM" } }

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