document.write( "Question 953288: A group of 50 total freshman and sophomores took a science test . The average score of the 35 freshmen was 85. The 15 sophomores scored an average of 75 . What was the average for all students who took the test \n" ); document.write( "

Algebra.Com's Answer #583267 by aYummyNoodle(10) $\"\"$ $\"About$

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We can multiply 35 by 85 to get the total score of all the freshmen:
\n" ); document.write( " $\"35%2A85=2975\"$
\n" ); document.write( "We can multiply 15 by 75 to get the total score of all the sophomores:
\n" ); document.write( " $\"15%2A75=1125\"$
\n" ); document.write( "We can add both totals together to get the total score for all 50 students:
\n" ); document.write( " $\"2975%2B1125=4100\"$
\n" ); document.write( "Now we can divide 4100 by 50 to get the average for all 50 students:
\n" ); document.write( " $\"4100%2F50=82\"$
\n" ); document.write( "So the average for all students who took the test is 82. \n" ); document.write( "

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