The Chemistry test

The Chemistry test contained 8 questions, each with 3 points. Peter scored 21 points. How many percent did Peter write a test?

Correct result:

p =  87.5 %


p=100 218 3=1752=87.5%p=100 \cdot \ \dfrac{ 21 }{ 8 \cdot \ 3 }=\dfrac{ 175 }{ 2 }=87.5 \%

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