Bonus based on output above certain percentage of standard. Calculate total monthly remuneration of workers A, B, C and D on the basis of the following information for the month of December, 2006 : (i) Standard production for each worker--1000 units; (ii) Rate of wages10 paise per unit; (iii) Bonus- *5 for each 1% increase over 90% of the standard; (iv) Dearness allowance per month is 100% of piece wage. The units produced by workers were as under : A : 950 units; B: 900 units; C : 960 units; D : 850 units