Dear student,
Net value added at factor cost = Rs 2000 (given)
we know that,
Gross value added at market price= GVA at MP= NVA at FC + Depreciation + Net indirect taxes (indirect taxes - subsidies)
GVA at MP= 2000 + 700 + (0-200)= Rs 2500 (in lakhs)
also, GVA at MP = value of output - intermediate consumption
2500 = value of output - 3000
value of output = 2500 + 3000 = Rs 5500 (in lakhs)
and we know that,
value of output = sales + change in stock (closing stock - opening stock)
5500= sales + (600-100)
sales = 5500 - 500 = Rs 5000 ( in lakhs)
Regards!!