Question

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

85%

Explanation:

1. Calculate how many students passed on their first try. 20 x 70% is 14, so 14 students passed on their first try.
2. 6 students retook the test. Half of 6 is 3. Add 3 to the 14 students that passed earlier.
3. Calculate the percent with the equation 17/20 = 0.85. 0.85 = 85%.