Question

For every 7 questions Anthony answers correctly he typically answers 3 incorrectly there are 30 questions on a test how many questions woild Anthony be expected to answer incorrectlyA.9 QuestionsB.10 QuestionsC.21 QuestionsD.27 Questions

Answer 1

Given the information, we can see that anthony has 7 correct answers and 3 incorrect in 10 questions, therefore, we can calculate the direct proportion solving for x:

`\begin{gathered} (3)/(10)=(x)/(30) \\ \Rightarrow x=(3\cdot30)/(10)=3\cdot3=9 \\ x=9 \end{gathered}`

Therefore, Anthony would be expected to answer incorrectly 9 questions