Calculate the earnings of workers A and B under straight piece-rate system and Taylor’s differential piece-rate system from the following particulars:

Normal rate per hour : Rs. 1–80 Standard time per unit : 20 seconds Differentials to be applied:

80% of piece rate below standard 120% of piece rate at or above standard Worker A produces 1,300 units per day and Worker B produces 1,500 units per day.