Calculate the earnings of workers, A, B and C under Merrick’s differential piece rate system from the following particulars: Normal rate per hour RO 10.800 Standard time per unit 30 seconds Output per...

1. Calculate the earnings of workers, A, B and C under Merrick’s differential piece rate system from the following particulars:

Normal rate per hour             RO 10.800

Standard time per unit            30 seconds

Output per day is as follows:

Worker A - 780 units;             Worker B - 900 units and      Worker C - 1200 units. Working hours per day are 8.