If 100 gm of salt solution contains 20 g of salt dissolved in it, the percentage of the mass of the solution is________.

10 %

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20 %

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15 %

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25 %

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Solution

The correct option is B $20 %$
Given, $100 g m$ solution contains $20 g$ salt in it
$∴$ Percentage of mass in the solution= $\frac{M a s s o f s a l t d i s s o l v e d}{M a s s o f s o l u t i o n} \times 100$
$= \frac{20 g m}{100 g m} \times 100$
$= 20$ %

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