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?
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%
asd
Well, let's break it down, shall we? 70% of the students passed the test on the first try, so that means 30% failed. Out of those who failed, half passed on their second try, which means another 15% passed. So, in total, we have 70% + 15% = 85% of the students who passed the test.
If there are 20 students in the class, then 85% of 20 students would be 17 students. So, 17 out of the 20 students passed the test.
Therefore, the overall percentage of students who passed the test is 17/20 * 100% = 85%.
So, 85% of Ms. Miller's class passed the test. Not too shabby!
To calculate the overall percentage of students who passed the test, we need to find the number of students who passed on their first try and the number of students who passed on their second try.
We know that 70% of the class passed on their first try, so the number of students who passed initially is 70% of 20:
70% of 20 = 0.7 * 20 = 14 students
Since the remaining students failed on their first try, they had the opportunity to retake the test. Half of those students passed on their second try, so the number of students who passed on their second try is 50% of the number of students who failed initially:
50% of (20 - 14) = 50% of 6 = 0.5 * 6 = 3 students
Therefore, the total number of students who passed the test is the sum of those who passed on the first try and those who passed on the second try:
Total number of students who passed = 14 + 3 = 17 students
To find the overall percentage of students who passed, we divide the number of students who passed by the total number of students and multiply by 100:
Overall percentage of students who passed = (17 / 20) * 100 = 85%
Therefore, the overall percentage of students who passed the test is 85%.
To find the overall percentage of students who passed the test, we'll first calculate the number of students who passed on their first try and the number of students who passed on their second try:
Number of students who passed on the first try = 70% of 20 students = 0.70 * 20 = 14 students
Number of students who failed on the first try = Total students - Students who passed on the first try = 20 - 14 = 6 students
Number of students who passed on their second try = Half of the students who failed on the first try = 0.5 * 6 = 3 students
Now, we'll calculate the total number of students who passed the test:
Total number of students who passed = Students who passed on the first try + Students who passed on their second try = 14 + 3 = 17 students
Finally, we can calculate the overall percentage of students who passed the test:
Overall percentage = (Total number of students who passed / Total number of students) * 100
= (17 / 20) * 100
= 85%
Therefore, the overall percentage of students who passed the test is 85%.