document.write( "Question 714987: On a certain test, a class with 10 students had an average score of 60 and a class with 15 students had an average score of 80. What was the average score on that test for the 25 students? \n" ); document.write( "

Algebra.Com's Answer #439182 by checkley79(3341) $\"\"$ $\"About$

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[(10*60)+(15*80)]/(10+15)
\n" ); document.write( "(600+1200)/25
\n" ); document.write( "1800/25=72 ANS. FOR THE OVERALL AVERAGE. \n" ); document.write( "

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