XX is aware that there is a learning effect for the production of one of its new products, but is unsure?about the degree of learning. The following data relate to this product.?
Time taken to produce the first unit? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?28 direct labour hours
?Production to date? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?15 units?
Cumulative time taken to date? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?104 direct labour hours?
What is the percentage learning effect??