In 1995 Division A of company X had 4850 customers. If there were 86 service errors in Division A that year, what was the service-error rate, in number of service errors per 100 customers for Division B of Company X in 1995?

1. In 1995 the overall service-error rate for Divisions A and B combined was 1.5 service errors per customers.

2. In 1995 Division B had 9350 customers, none of whome were customers of Division A.