(a) The management of a company wants to formulate an incentive plan for the workers with a view to increase productivity. The following particulars have been extracted from the books of company.

Piece Wage rate

₹10

Weekly working hours

40

Hourly wages rate

*40 (guaranteed)

Standard/normal time

per unit 15 minutes

Actual output for a week:

Worker A

176 pieces

Worker B

140 pieces

Differential piece rate: 80% of piece rate when output below normal and 120% of piece rate when output above normal.

Under Halsey scheme, worker gets a bonus equal to 50% of Wages of time saved. Calculate earning of workers under Halsey's, Rowan's premium scheme and Taylor's Differential Piece Rate.