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OpenStudy (anonymous):
estimate 45% of 20. Given 40% of 20=8 and 50% of 20=10
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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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