A solid body weights 5N in water and 7N in Oil of relative density 0.85.The relative density of solid body material is?

Answer 1

1.375

Answer 2

how is it possible explination plz

Answer 3

Ta = 5N
TB = 7N
Ta/TB = Ss-Sa/Ss-Sb
5/7= Ss-1/Ss-0.85
5Ss-4.25 = 7Ss-7
Ss=1.375
Where, Ss: Specific density of solid body
Sa: Specific density of water
SB: Specific density of oil
Ta: Apparent weight of body in water
TB : Apparent weight of the body in oil