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Mathematics 19 Online
OpenStudy (anonymous):

estimate 45% of 20. Given 40% of 20=8 and 50% of 20=10

OpenStudy (anonymous):

9

OpenStudy (anonymous):

would it be 10?

OpenStudy (anonymous):

10 would be half, 50%

OpenStudy (anonymous):

oh ok thanks

OpenStudy (anonymous):

10% of 20 is 2, multiply by 4.5 to get 45%

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