Question

a body weighs 3gf in water and its relative density is 2.5, then its weight in air will be

Answer 1

$Relative density of a substance is the ratio of its density to the density of a reference substance.</p><p>relativedensityofthebody=LossofweightinwaterWeightofthebodyinair.</p><p>It is given that A body weighs 20gf in air and 18.0gf in water. </p><p>Therefore, 20−1820=10=X</p><p>Hence, the answer X-3 = 7.</p><p></p><p>$

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