A publishing company wants to launch a new western bridal magazine. The magazine will only be distributed through bookstores. Their market research group has made the following forecasts: Target Market: 75,000 Awareness Rate: 70% All Commodity Volume (ACV): 40% Top box trial rate: 85% Top box trial adjustment factor (i.e., translation value): 0.8 Second box trial rate: 50% Second box trial adjustment factor: 0.30 Trial purchase quantity: 1 Repeat purchase quantity: 1 Repeat Purchase Frequency: 6 1. 

If the publisher wants to sell a total of 50,000 copies of the magazine in a year, what is the repeat purchase rate that is necessary so that he can achieve this goal?