Bill got 49 correct answers on a 70 -question test. What percent of the questions did he answer incorrectly?

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UpStudy AI · Accepted Answer

To find the percentage of questions Bill answered incorrectly, we need to first determine the number of questions he answered incorrectly.

Given:
- Total questions on the test = 70
- Correct answers = 49

Number of questions answered incorrectly = Total questions - Correct answers
= 70 - 49
= 21

Now, to find the percentage of questions answered incorrectly, we use the formula:
Percentage = (Number of questions answered incorrectly / Total questions) * 100

Substitute the values:
Percentage = (21 / 70) * 100

Calculate the percentage.
Calculate the value by following steps:
- step0: Calculate:
  $$\left(\frac{21}{70}ight)	imes 100$$
- step1: Reduce the fraction:
  $$\frac{3}{10}	imes 100$$
- step2: Reduce the numbers:
  $$3	imes 10$$
- step3: Multiply the numbers:
  $$30$$
Bill answered 21 questions incorrectly, which is 30% of the total questions.

Bill got 49 correct answers on a 70 -question test. What percent of the questions did he answer incorrectly?

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