Answer :
Final answer:
John's score of 18 out of 20 is equivalent to a percentage score of 90%. This is higher than the 80% required, so he does qualify for the job.
Explanation:
In order to determine if John qualifies for the job, we need to find out his percent correct on the test. He scored 18 out of 20, so, if we turn this into a percentage, we can see his score. The word "percent" literally means "per hundred", which is what we need to calculate. Therefore, his percentage score is (18 ÷ 20) × 100 = 90%.
As 90% is higher than the 80% he needed to qualify, John does qualify for the job. The key here is understanding how to convert a fraction into a percentage, then comparing that to the requirement.
Learn more about Fraction to Percentage Conversion here:
https://brainly.com/question/31738948
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