Last year 4/5 of the applicants for a job in police force passed the physical exam. If 3/4 of the applicants passed the physical exam also passed the written exam. How many applicants ppased both exams?
(1) The number of applicants who did not pass either exam was equal to the number who passed the written examination only
(2) There was a total of 100 applicants
We want to know: How many applicants passed both?
1. clearly insufficient. Unless we know how many applicants actually took the exam.
2. B should be sufficient.