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If a student answered 85% of the questions correctly in an exam and there were 1
Practice Questions
Q1
If a student answered 85% of the questions correctly in an exam and there were 120 questions, how many questions did he answer correctly?
90
95
100
102
Questions & Step-by-Step Solutions
If a student answered 85% of the questions correctly in an exam and there were 120 questions, how many questions did he answer correctly?
Correct Answer: 102
Steps
Concepts
Step 1: Understand that the student answered 85% of the questions correctly.
Step 2: Know that there are a total of 120 questions on the exam.
Step 3: Convert the percentage (85%) into a decimal. This is done by dividing 85 by 100, which gives you 0.85.
Step 4: Multiply the decimal (0.85) by the total number of questions (120).
Step 5: Calculate 0.85 * 120, which equals 102.
Step 6: Conclude that the student answered 102 questions correctly.
Percentage Calculation
– Understanding how to calculate a percentage of a total number.
Basic Arithmetic
– Applying multiplication to find the number of correct answers based on the percentage.
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