From the following particulars, work out the earnings for the week of a worker under
- Straight piece rate
- Differential piece rate
- Halsey premium system
- Rowan system
Number of working hours per week = 48
Wage per hour = Rs. 3.75
Normal time per piece = 20 minutes
Rate per piece = Rs. 1.50
Normal output per week = 120 pieces
Actual output for the week = 150 pieces
Differential piece rate: 80% of piece rate when the output is below standard and 120% when above standard.