Mathematics: Karen was in a trivia contest and got 18 of the 20 questions correct. What percent of the questions did she get wrong? Help

(-50) would be the way to represent a withdrawal. a withdrawal means taking away, aka subtracting, which makes it a negative integer....

Karen was in a trivia contest and got 18 of the - id182014390608, vvkaitlynvv4982

katherineedwards1105

20.09.2021

$\large\bf{\underline{Given:}}$

Total questions = 20correct one = 18

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$\large\bf{\underline{To\:find:}}$

Percentage of wrong questions

$\bf{⟹20 -18 = 2 \: questions}$

$\bf{Let\:the \:percentage\:of \:wrong\: question\:be\:x}$

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$\large\bf{\underline{Therefore:}}$

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎ $⟹x\% \: of \: 20 = 2$

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎ $⟹ \frac{x}{100} \times 20 = 2$

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎ $⟹x = 2 \times \frac{100}{20}$

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎ ⟹x = 10

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$\large\bf{\underline{Hence }}$

$\bf{⟹10\%\:of \:the \:questions\: she\: get\: wrong}$

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