Question

4. A body weighs 20gf in alr and 18gf in water. Calculate the relative density.​

Answer 1

Answer:

x-3=7

Explanation:

Relative density of a substance is the ratio of its density to the density of a reference substance.

relativedensityofthebody=LossofweightinwaterWeightofthebodyinair

It is given that A body weighs 20gf in air and 18.0gf in water. 

Therefore, 20−1820=10=X

Hence, the answer X-3 = 7.

Answer 2

Answer:

Refers to above attachment.....