hasanmazeda hasanmazeda

07-09-2018
Mathematics

contestada

sue answered 80% of 150 test questions correctly. how many questions did she not answer correctly?

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kelise54 kelise54

07-09-2018

She answered 30 questions incorrectly.
Multiply 80% (0.80) by 150 which should give you 120
Subtract 120 from 150 and you get your answer 30

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07-09-2018

120 divided by 150 = 0.8 in percent it would be 80%. So she got 30 incorrect

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