document.write( "Question 133419: A total of 50 juniors and seniors took a math test. The 35 juniors attained an average of 80 while the 15 seniors attained a 70. What was the average score for all 50 students who took the test? \n" ); document.write( "
Algebra.Com's Answer #97593 by solver91311(24713)\"\" \"About 
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If 35 juniors averaged 80, the total of all their scores must have been \"35%2A80=2800\". Likewise, the total of all the seniors' scores must have been \"15%2A70=1050\". So the total of all 50 students' scores is \"2800%2B1050=3850\", and the average is \"3850%2F50=77\" \n" ); document.write( "
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