capital Investment Rs$.15$ Lakhs

salvage value Rs$.3$ Lakhs at the end of $6$ th year

Unit sale price Rs$.300$

variable Cost $/$ Unit Rs $.170$

fixed cost prt annum Rs$.2\mathrm{.}5$ lakhs

Tax rate $25\%$

WACC $10\%$

Units sold in $5$ years $3000,4000,5000,6000,7000,5000$ respectively

Find NPV $.$