document.write( "Question 818730: A student has earned 468 out of 600 points possible in a class. The final is worth 200 points. How many points must the student get on the final in order to receive 639 points total in the class? \n" ); document.write( "
Algebra.Com's Answer #492761 by TimothyLamb(4379)\"\" \"About 
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total points possible in class:
\n" ); document.write( "P = 600 + 200 = 800
\n" ); document.write( "---
\n" ); document.write( "(468/600)(600/800) + (f/200)(200/800) = (639/800)
\n" ); document.write( "(468/800) + (f/800) = (639/800)
\n" ); document.write( "f/800 = (639/800) - (468/800)
\n" ); document.write( "f = 639 - 468
\n" ); document.write( "f = 171
\n" ); document.write( "---
\n" ); document.write( "get 171 points on final to get class grade of 639
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