If a student answered 90 questions correctly out of 120, what percentage of ques

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Question: If a student answered 90 questions correctly out of 120, what percentage of questions did the student answer incorrectly?

Options:

Correct Answer: 20%

Solution:

Incorrect answers = 120 - 90 = 30. Percentage incorrect = (30/120) * 100 = 25%.

If a student answered 90 questions correctly out of 120, what percentage of questions did the student answer incorrectly?

If a student answered 90 questions correctly out of 120, what percentage of questions did the student answer incorrectly?

Step 1: Identify the total number of questions. In this case, it is 120.
Step 2: Identify the number of questions answered correctly. Here, it is 90.
Step 3: Calculate the number of questions answered incorrectly by subtracting the correct answers from the total questions: 120 - 90 = 30.
Step 4: To find the percentage of incorrect answers, divide the number of incorrect answers by the total number of questions: 30 / 120.
Step 5: Multiply the result from Step 4 by 100 to convert it to a percentage: (30 / 120) * 100.
Step 6: Calculate the final result: 30 / 120 = 0.25, and 0.25 * 100 = 25%.

Percentage Calculation – Understanding how to calculate the percentage of a part relative to a whole.
Basic Arithmetic – Performing simple subtraction and multiplication to derive answers.