Spinster Co has developed a new product. The first batch of 10 units will take 300 labour hours to produce. There will be an 80% learning curve that will continue until 540 units have been produced. Batches after this level will each take the same amount of time as the 54th batch. The batch size will always be 10 units. Note. The learning index for an 80% learning curve is –0.3219 Ignore the time value of money.