Example $12\mathrm{.}3$: The soil in a borrow pit has a void ratio of $0\mathrm{.}90.$ A fill$-$in$-$place volume of $20,000$

$m^3$ is to be constructed with an in$-$place dry density of $18\mathrm{.}84k\frac{N}{m^3}.$ If the owner of borrow area

is to be compensated at Rs$.1\mathrm{.}50$ per cubic metre of excavation, determine the cost of compen$-$

sation.