Portia rates all her first dates as either “duds” or “dudes.” Her date on Wednesday night was a dud. On the next night, she went on a date with someone else who was also a dud. If the probability of her getting two duds in a row was 4/25, what is the probability that her next date will be a dude?

1. 1/5
2. 9/25
3. 2/5
4. 3/5
5. 21/25