A man works 8 hours a day for 5 days each week. He earns Rs. 2.40 per hour for regular hours and Rs. 3.20 per hour for any overtime. If his total earnings in 4 weeks amount to Rs. 432, how many hours does he work in total?

Explanation

The man works 5 days a week at 8 hours per day, which totals 40 regular hours weekly. Over 4 weeks, regular hours are 160. Since he earns Rs. 432 in total, including overtime paid at Rs. 3.20 per hour, the total hours worked must be 175 to match the earnings. Thus, option B is correct.