A piece of solid weighs 120 g in air ,80 g in water and 60 kg in a liquid . The relative density of the solid and that of the liquid are respectively

Options

A. `2/3`
B. `4/5`
C. `13/15`
D. `15/13`

Answer

A

Explanation

Specific gravity of body = `150/30 = 5`
Volume of body = `150./5 = 30 cm^(3)`
Now, `(150-130)g = 30 xx rho_(1) xx g`
`implies rho_(l) = 20/30 = 2/3`.