Bill got 49 correct answers on a 70 -question test. What percent of the questions did he answer incorrectly?
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To find out what percent of the questions Bill answered incorrectly, we first need to determine how many questions he got wrong. Since there are 70 questions total and he got 49 correct, we can subtract to find the incorrect answers: 70 - 49 = 21 questions answered incorrectly. Next, we calculate the percentage of incorrect answers by dividing the number of incorrect answers by the total number of questions and then multiplying by 100: (21 / 70) * 100 = 30%. So, Bill answered 30% of the questions incorrectly.