Question

A student received a 75% on an exam. If there were 20 questions on the exam, which ratio would show the number of questions answered correctly?

A. 15:20
B. 20:15
C. 5:20
D. 20:5

Answer 1

The correct answer is A. 15:20, representing that the student correctly answered 15 out of 20 questions on the exam.

Step-by-step explanation:

If a student scored a 75% on an exam with 20 questions, to find the number of questions answered correctly, we would calculate 75% of 20. Since 75% is equivalent to 0.75, we multiply 0.75 by the total number of questions, which is 20.

0.75 * 20 = 15

Thus, the student answered 15 questions correctly out of 20. Therefore, the ratio representing the number of questions answered correctly to the total number of questions is 15:20, which can also be simplified to 3:4 if needed. The correct answer from the options provided is A. 15:20

Answer 2

Assuming the question is asking for the ratio of questions answered correctly to the number of questions, A is the correct answer. 75% of 20 is 15 ((20/4) x 3), so 15:20 is correct, though this can be cancelled to 3:4. If the question asks for the ratio of correct to incorrect answers, the ratio would be 15:5, or 3:1.