A customer places an order on January 1, 2016. Ten days later that order is received by

Question:

A customer places an order on January 1, 2016. Ten days later that order is received by the manufacturing department. Fifteen days later, the order is put into production. Processing (manufacturing) time is 20 days for this order. The completed order was then shipped 10 days later. For this order, what was the total customer response time (CRT)?