Calculate the times of correct answer?

Hi, I don't know whether DirectRT or MediaLab can realize this.
Suppose first, we let the subject answers 20 mathematical problems. After correctly answers the questions to a certain level, like 80%, the subject can go on to the next test, otherwise he has to continue doing these math problems.
Is there a way to achieve this?
Thanks:)

DirectRT can not do this yet but you may be able to do what you want in MediaLab. See:
[URL="http://www.empirisoft.com/support/showthread.php?t=32"]www.empirisoft.com/support/showthread.php?t=32[/URL]