In a factory, guaranteed wages are paid @ Rs. 2 per hour and the payment is made on a weekly basis for a week of 48 hours. By time and motion study it is estimated that manufacture of a product requires 25 minutes. To this, personal and contingency allowance of 20% is to be added. During one week Mr.D produced 110 articles. Calculate his wages under (a) Time rate (b) Piece rate with guaranteed weekly wages.