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A student earned a grade of 80% on a math test that had 20 problems. How many problems on this test did the student answer correctly? (round to the nearest whole number)
(Please answer with explination)

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Answer:

Required Answer:-

  • A student earned 80% in a math test which has 20 problems.
  • It means The student answers 80% of 20 problems correctly

[tex]\longrightarrow[/tex][tex]\sf 80\%\:of\:20 [/tex]

[tex]\longrightarrow[/tex][tex]\sf {\dfrac{80}{{\cancel{100}}}}\times {\cancel{20}} [/tex]

[tex]\longrightarrow[/tex][tex]\sf {\dfrac {80}{5}}[/tex]

[tex]\longrightarrow[/tex][tex]\sf 16 [/tex]

[tex]\therefore[/tex] The student answered 16 problems correctly

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