What percentage of students earned less than a grade of 70 on the exam?9%15%47%53%93%

To find the percentage of students who earned less than a grade of 70 on the exam, we need to calculate the cumulative percentage up to that point.

First, let's add up the percentages given: 9% + 15% + 47% + 53% + 93% = 217%.

Since the total percentage exceeds 100%, we need to adjust the percentages to make them proportional.

To do this, we divide each percentage by the total percentage (217%) and multiply by 100 to get the adjusted percentages:

9% / 217% * 100 = 4.15% 15% / 217% * 100 = 6.91% 47% / 217% * 100 = 21.66% 53% / 217% * 100 = 24.42% 93% / 217% * 100 = 42.86%

Now, we can find the cumulative percentage by adding up the adjusted percentages:

4.15% + 6.91% + 21.66% + 24.42% + 42.86% = 100%

Therefore, the percentage of students who earned less than a grade of 70 on the exam is 100%.