Step 1: Find the total revenue over the full 30 days.
The average revenue was Rs. 10,000 per day for 30 days, so the total revenue for the period is \(10000 \times 30 = Rs. 3,00,000\).
Step 2: Find the total revenue earned on the 8 weekend days.
The weekend average was Rs. 20,000 per day for 8 days, so weekend revenue is \(20000 \times 8 = Rs. 1,60,000\).
Step 3: Find the total revenue earned on weekdays.
The 30 day total is made up of weekday revenue plus weekend revenue, so weekday revenue is \(3,00,000 - 1,60,000 = Rs. 1,40,000\).
Step 4: Find the number of weekdays.
Out of 30 days, 8 are weekend days, so the remaining weekdays are \(30 - 8 = 22\).
Step 5: Divide the weekday revenue by the number of weekdays.
Average weekday revenue is \(\frac{1,40,000}{22} = Rs. 6363.6\), which rounds off to Rs. 6364.
Step 6: Rule out the wrong options.
Option 2 (5250), option 3 (6570) and option 4 (8060) do not come out of dividing 1,40,000 by 22, so they are wrong. Only option 1 (6364) matches the exact division, so it is the answer.