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হোম›নবম-দশম শ্রেণি›English Version›Mathematics›Algebraic Ratio and Proportion›C-11-Q125

C-11-Q125mediumsingle_mcq

Weight of $1$ cm³ wood is $7$ decigrams. Percentage of weight of the wood compared to equal volume of water is—

a $50\%$
b $60\%$
c $70\%$
d $80\%$

ব্যাখ্যা

$7$ decigrams $= 0.7$ g, while an equal $1$ cm³ of water weighs $1$ g. So the wood is $\dfrac{0.7}{1} = 70\%$ as heavy as water.

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Algebraic Ratio and Proportion — সব প্রশ্ন দেখুন (180টি) →