On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 30 questions correct. What was the percent of increase?
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To find the percent of increase in the number of correct answers from the first attempt to the second attempt, you subtract the initial value (25 questions) from the new value (30 questions), yielding a difference of 5 questions. You then divide that difference by the original value: (5 / 25) * 100 = 20%. So, the percent of increase in the number of correctly answered questions is 20%. Keep an eye on your grading scale next time—understanding it can help turn that 20% increase into a passing score!