PRB
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Problem
- sean got 85% correct answers out of a 60-item test.how many items did he answer incorrectly?
Solution
[tex]\:\:\:\:\:\:\:\:\:85\%:60= \tt \red{n } \: \: \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \begin{gathered}0.85\red{ \tt{n}} = 60 \: \: \: \: \: \: \: \: \: \: \\ \frac{ \cancel{0.85}\red{ \tt{n}}}{60} = \cancel\frac{0.85}{60} \: \: \: \: \: \: \\ \large{ \boxed{ \green{ \tt{n} = 51}}}\end{gathered}[/tex]
Final Answer
- Thus, Sean got 51 incorrect answers over 60 items.
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#CarryOnLearning
