document.write( "Question 61553This question is from textbook Essential Algebra
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document.write( ": Hi, I am a Distance Education student. I am having trouble figuring out how to set this problem up to solve it. Thank you for your help :)\r
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document.write( "Problem: Lake Perris charges boaters different user fees depending on the horsepower (hp) rating of their engines. Zero-5 hp boaters are charged $5 per day, 6-50 hp $12, and over 50 hp $25 per day. If a total of 49 boaters used the lake on a certain day and paid $699 in fees, how many of each type boater used the lake, if there were ten more 6-50 hp boaters than zero-5 hp boaters? \n" );
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Algebra.Com's Answer #42370 by asha(30)![]() ![]() ![]() You can put this solution on YOUR website! let there be x zero-5hp boaters \n" ); document.write( "there will be \n" ); document.write( "x+10 6-50hp boaters \n" ); document.write( "let there be y boaters over 50hp \n" ); document.write( "given x+x+10+y=49 \n" ); document.write( "2x + y =39 eqn.1 \n" ); document.write( "zero hp boaters are charged 5$,6-50 hp boaters are charged 12$ and over 50hp boaters are charged25$ \n" ); document.write( "the eqn. will be 5x+12(x+10)+25y=699 \n" ); document.write( "5x+12x+120+25y=699 \n" ); document.write( "17x+25y=699-120=579 eqn.2 \n" ); document.write( "multiply eqn.1 by 25, we get \n" ); document.write( "50x +25y =39*25 =975 eqn.3 \n" ); document.write( "eqn.3-eqn.2 gives \n" ); document.write( "33x=975-579 =396 \n" ); document.write( "x =396/33 =12 \n" ); document.write( "plugging x value in eqn,1 we get \n" ); document.write( "24+y =39 \n" ); document.write( "y=39-24=15 \n" ); document.write( "there are 12 zero hp boaters,22, 6-50 hp boaters and 15 boaters over 50hp. \n" ); document.write( "you can check the answers by plugging in the values in the equations. \n" ); document.write( "good luck !!! \n" ); document.write( " |