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Question

Mass of beaker=10g
Mass of mixture+beaker=25g
Mixture contains 30% sand. Find the weight of sand.


A
5 g
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B
4.5 g
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C
3 g
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D
3.5 g
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Solution

The correct option is B 4.5 g
Mass of mixture=$$25g-10g=15g$$
Percentage of sand=30%=$$\frac{Mass  of  sand}{Mass  of  mixture}$$
 Mass of sand =$$0.3\times15g=4.5 g$$

Chemistry

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