Volume-based cost driver versus ABC : manufacturer Jasmine Lens Company manufactures sophisticated lenses and mirrors used in large optical telescopes. The company is now preparing its annual profit plan. As part of its analysis of the profitability of individual products, the management accountant estimates the amount of overhead that should be allocated to the individual product lines from the following information: The total budgeted material-handling cost is $270000. Required 1. Calculate the material-handling costs allocated to one mirror under a costing system that allocates overhead on the basis of direct labour hours. 2. Calculate the material-handling costs allocated to one lens under a costing system that allocates overhead on the basis of direct labour hours. 3. Calculate the material-handling costs allocated to one mirror under activity-based costing. The activity driver for the material-handling activity is the number of material moves. 4. Calculate the material-handling costs allocated to one lens under activity-based costing