UPSC CSE Prelims 2014
The total number of tickets sold for the charity show was 420.
The total amount received from the sale of all tickets is the sum of the revenues from each category:
Total amount = ₹1050 + ₹420 + ₹140 = ₹1610.
Options A (Rs 900), B (Rs 1,540), and D (Rs 2,000) are incorrect. The accurate calculation of the total amount received involves segmenting the total number of tickets according to their respective selling prices and summing the individual revenues. The detailed computation demonstrates that the correct total revenue is ₹1610, which does not align with these alternative values.