document.write( "Question 168329This question is from textbook pre-algebra
\n" ); document.write( ": a mathematics intructor asserted that students test grades are directly proportional to the amount of time spent studying. brent studies 15 hr. for a particular test and gets a score of 85. at this rate, what score would ha have recieved if he had studied 16hr.?
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Algebra.Com's Answer #124070 by Mathtut(3670)\"\" \"About 
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\"15%2F85=16%2Fx\"cross multiply\r
\n" ); document.write( "\n" ); document.write( "\"15x=1360\"divide by 15\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28x=90.66%29\" score if he studied for 16 hours
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