To determine the man's hourly wage, we need to calculate the total number of hours he works over the given period and then divide his total earnings by this number of hours.
1. Calculate the total number of hours worked:
He works 8 hours per day for 5 days. Therefore, the total hours worked is:
Total Hours = 8 hours/day × 5 days = 40 hours
2. Calculate the hourly wage:
The man earns Rs. 4,000 for working these 40 hours. Therefore, his hourly wage is calculated by dividing the total earnings by the total hours worked:
Hourly Wage = Total Earnings / Total Hours = Rs. 4,000 / 40 hours = Rs. 100 per hour
Thus, the man's hourly wage is Rs. 100.
The correct answer is Rs. 100.