Capital One interview questions

Contacted by representative about interviews on campus and accepted one. It was a case interview on the profitability of three different credit cards. Got invited the next day to fly to Plano for a day of interviews. Flew in the night before to the Nylo Plano and had some appetizers and drinks, just relax and have some fun and try to find out what working at the company is really like. The next day consisted of 3 case interviews and 1 behavioral. All 4 of my interviewers were Indian so that made things a bit more difficult since they were hard to understand, but overall the cases are pretty basic algebra, nothing to get bent out of shape about.

Case Interview: Underwriting for a credit card company. In deciding whether or not to issue credit cards, CapOne verifies employment history. Cost is $1 per application. X% are verfied, 1-X% fail the verification. What percentage of good and bad applicants does there need to be in order for verification process to break even