document.write( "Question 171498: Two high school classes took the same test. One class of 20 students made an average grade of 80%; the other class of 30 students made an average grade of 70%. What is the average grade for all students in both classes?
\n" ); document.write( "I got the answer of 75%. I'm not sure if that's correct.
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Algebra.Com's Answer #126629 by stanbon(75887)\"\" \"About 
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Two high school classes took the same test. One class of 20 students made an average grade of 80%; the other class of 30 students made an average grade of 70%. What is the average grade for all students in both classes?
\n" ); document.write( "I got the answer of 75%. I'm not sure if that's correct.
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\n" ); document.write( "The weighted average is (20/50)*80 + (30/50)*70 = 74%
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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