Solve costing Question

Plz solve Anybody this que. costing labour topic

1. In production unit, the daily wage rate guaranteed is Rs. 1.87 and the standard output fixed for the month is 1000 units. This reprisints 100% efficiency. The daily wage  rate  shows 2/3 of efficiency standard. Beyond this graded bonus in a fixed to the increased output is admissible as follows:

                                                               Efficiency                                           Bonus

                                                                  90%                                                  10%

                                                               100%                                                  20%          

 Further increase of 1% bonus for every 1% further rise of efficieny. Find out the total earnings of mr. Arun and Mr. Balu who have enjoyed only 4 days of leave in a month of 30 days. Their output were: Arun 900 units: Balu 1000 units. someone reply me ( email kjeet 76 @ gmail.com)