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OpenStudy (anonymous):
What is forty−five percent of twenty?
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OpenStudy (anonymous):
9
OpenStudy (anonymous):
20*.45=9
OpenStudy (mathstudent55):
"of" in math usually means "times." Also, 45% means 45/100 = 0.45. That means 45% of 20 = 0.45 * 20 = 9
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