this is the last one 45 people cashed checks at bank A on Monday. Of these 80% of these already had accounts at bank A. one-third of the people who did not already have an account opened, opened an account Monday. how many people opened an account monday? how do i figure that out please?

0.8 * 45 = 36

45 - 36 = 9

1/3 * 9 = ?