The schedule working hour of a labour in a week if 48 hours and he gets Rs. 480 for that. Over time rate is 25% more than the the basic salary rate. In a week a labour gets Rs. 605, how many hours altogether he works in that week.

Schedule working hours in week = 48
Total pay in a week for schedule working hours = Rs. 480
Pay per hour for schedule working hours = $$\frac{{480}}{{48}}$$ = Rs. 10
Pay per hour for over time = 10 + 25% of 10 = Rs. 12.5
Total pay in that particular week = Rs. 605
Extra pay = 605 - 480 = 125
So, total over time = $$\frac{{125}}{{12.5}}$$  = 10 hours
Thus, total work hour altogether in that week = 48 + 10 = 58 hours