A man is paid ₹ 5 per h for regular working day and ₹ 8 per h overtime. A regular working day has 8 h and a regular week has 5 working days. If he earns ₹ 920 in 4 weeks, then what is the total number of hours that he worked assuming that he was present on all regular working days?

200 h
180 h
175 h
160 h

Correct Answer: 175 h

Explanation:

Number of regular hours during 4 weeks = 8 x 5 x 4 = 160
Amount paid for regular working hours = 160 x 5 = ₹ 800
Balance left = (920 - 800) = ₹ 120
So, ₹ 120 is paid for his over time at ₹ 8 per h.
∴ Total number of overtime working hours = 120/8 = 15 h
Total working hours = (160 + 15) = 175 h

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