document.write( "Question 114535This question is from textbook Algebra 1/2
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document.write( ": I need to know how to solve this problem so I can explain it to my boys.
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document.write( "Joe tossed 4 into the pot. Their average weight was 6 lbs. Then he tossed in 5 more whose average weight was 7 lbs. Then he threw in a big one. The overall average weight of all of theim was 7 lbs. What did the big one weigh?
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document.write( "The answer key says 11. Can you show me how solve this? \n" );
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Algebra.Com's Answer #83316 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Joe tossed 4 into the pot. Their average weight was 6 lbs. \n" ); document.write( "You now have 4 objects in the pot with total weight of 4*6=24 lbs \n" ); document.write( "--------------- \n" ); document.write( "Then he tossed in 5 more whose average weight was 7 lbs. \n" ); document.write( "You now have 9 objects in the pot with total weight of 24+5*7 = 59 lbs. \n" ); document.write( "----------------- \n" ); document.write( "Then he threw in a big one. \n" ); document.write( "You now have 10 objects in the pot with total weight of 59+x lbs \n" ); document.write( "------------------- \n" ); document.write( "The overall average weight of all of them was 7 lbs. \n" ); document.write( "overall average = (59+x)/10 \n" ); document.write( "----------------- \n" ); document.write( "What did the big one weigh? \n" ); document.write( "EQUATION: \n" ); document.write( "(59+x)/10 = 7 \n" ); document.write( "59+x = 70 \n" ); document.write( "x = 11 lbs \n" ); document.write( "The big one weighed 11 lbs. \n" ); document.write( "================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |