Ticket for all but 100 seats in a 10000 seat stadium were sold. Of the ticket sold, 20% were sold at half price and the remaining tickets were sold at the full price of Rs. 20. The total revenue from the ticket sales, (in Rs.) was :

Answer: Option B

Total seats = 10000
Ticket sold = (10000 - 100) = 9900
According to the question,
Total revenue
= 9900 × $$\frac{20}{100}$$ × 10 + 9900 × $$\frac{80}{100}$$ × 20
= 9900 × 2 + 9900 × 16
= 9900 (2 + 16)
= Rs. 178200