70% of Ms. Miller's class passed the test on the first try. Those who failed were able to retake and half of those students passed on their second try. If there are 20 students in the class, what overall percentage passed the test?

Answer 1

first try: 0.70 * 20 = 14 passed , 6 failed
second try: 0.5 * 6 = 3 passed
so 14 + 3 = 17 out of 20 passed
100(17/20) = 5*17 = 85%

Answer 2

asd