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twenty percent of what is 9? Jonas answered this question as shown. Explain his error and provide the correct solution. a equals p percent times b. Nine equals twenty percent times x. Nine equals zero point zero two times x. Nine divided by zero point zero two equals zero point zero two times x, this quantity divided by zero point zero two. Both zero point zero twos on the right side of the equation cancel out. Nine divided by zero point zero two. Four hundred fifty equals x. Answer: twenty percent of four hundred fifty is 9.
Divide by the decimal form of the percentage. 0.02 is not 20% in decimal form. If you aren't sure how to convert from percentage to decimal, then divide the percentage by 100 (e.g. 20/100 in this case).