Answer :
Final answer:
To calculate the percentage of incorrect answers, subtract the correct answers from the total amount, resulting in 5 incorrect answers. Then divide the incorrect answers by the total problems, multiplied by 100, giving us 25% incorrect.
Explanation:
The subject is the calculation of percentages, specifically determining what percent of the test problems a student got incorrect. To find the answer, first subtract the number of problems the student got correct (15) from the total number of problems on the test (20). This gives you 5 incorrect answers. Then, to convert this number into a percentage, divide the number of incorrect problems (5) by the total number of problems (20) and multiply by 100. This gives an answer of 25%. So, the student got 25% incorrect on the test.
Learn more about Percentage Calculation here:
https://brainly.com/question/329987
#SPJ11