Find the concentration of solution in terms of weight percent if 10gm of common salt is dissolved in 40gm of water.

15%

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20%

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33.33%

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25%

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Solution

The correct option is B
20%

$Weight% = \frac{W e i g h t o f s o l u t e}{W i g h t o f s o l u t e + W e i g h t o f s o l v e n t} \times 100 \Rightarrow \frac{10}{10 + 40} \times 100 \Rightarrow 20%$

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