document.write( "Question 1185474: Akshi has five exams scores of 66,64,84,58,and 79. In her Latin class. What score does she need on the final exam to have a mean grade of 70? Round your answer to two decimal places,if necessary. ( ALL exams have a maximum of 100 points.) \n" ); document.write( "
Algebra.Com's Answer #816299 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "To have an average of 70 on 6 tests, the total of her scores needs to be 6*70=420.

\n" ); document.write( "Add the given five test scores and subtract that total from 420 to get the answer.

\n" ); document.write( "Or you can do it like this, by comparing each of the five given test scores to the desired average:
\r\n" );
document.write( "  66  -4\r\n" );
document.write( "  64  -6\r\n" );
document.write( "  84 +14\r\n" );
document.write( "  58 -12\r\n" );
document.write( "  79  +9\r\n" );
document.write( "--------\r\n" );
document.write( "     -22+23 = +1

\n" ); document.write( "Overall, her current five test scores put her 1 point above her desired average; that means her next score must be 1 point below that average.

\n" ); document.write( "ANSWER: She needs a score of 69 (-1) on her next test to get an average of 70.

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