On the basis of the following information, calculate the earnings of X and Y under the straight piece rate system and Taylor’s differential piece rate system:

Standard production: 10 units per hour

Normal time rate: Rs 5.00

Differential piece rate to be applied:

80% of piece rate for performance below standard

120% of piece rate for performance at or above the standard

Actual performance:

X produced 80 units in a day of 10 hours

Y produced 110 units in a day of 10 hours