Jenny has finished 12 of the 20 lessons and her piano book what percent did she finish

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Answer:

$let \: the \: percentage \: be \: x \\ therfore \: x\%of \: 20 = 12 \\ (x)/(100) * 20 = 12 \\ (x)/(5) = 12 \\ x = 12 * 5 \\ x = 60\%$

hope it will help you

Juan Velez answered Oct 12, 2023

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