Covered Wharf Ltd. processes three kinds of potato chips - Regular, Storm Day and Dill. During the year the joint costs of processing the potatoes were $320,000. There were no beginning or ending inventories. Production and sales value information were as follows:

Sales Value

Product Boxes at Split-Off Separable Costs Selling Price

Regular 40,000 $15 per box $15 per box $30 per box

Storm Day 25,000 $18 per box $10 per box $30 per box

Dill 45,000 $27 per box $8 per box $20 per box

a) Allocate the joint costs using the physical output method.

b) Allocate the joint costs using the net realizable value method.

c) Allocate the joint costs using sales value at split-off point method.