document.write( "Question 1165000: Three girls, Ann, Betty and Cynthia, each have a younger brother, Dylan,
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document.write( "Ernie and Frank, respectively. All six children do some fruit picking for
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document.write( "the local farmer. The farmer agrees to pay each child as many dollars per
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document.write( "basket as the number of baskets of fruit collected by that child. Each of
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document.write( "the girls earned $45 more than her brother, and all six children collected
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document.write( "a different number of baskets. How much did the farmer pay them all in
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document.write( "total? \n" );
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Algebra.Com's Answer #789447 by ikleyn(52943) You can put this solution on YOUR website! . \n" ); document.write( "Three girls, Ann, Betty and Cynthia, each have a younger brother, Dylan, \n" ); document.write( "Ernie and Frank, respectively. All six children do some fruit picking for \n" ); document.write( "the local farmer. The farmer agrees to pay each child as many dollars per \n" ); document.write( "basket as the number of baskets of fruit collected by that child. Each of \n" ); document.write( "the girls earned $45 more than her brother, and all six children collected \n" ); document.write( "a different number of baskets. How much did the farmer pay them all in total ? \n" ); document.write( "~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "Let x be the number of baskets collected by some girl, and y be the number of basket collected by her brother.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Then for each such a pair, we have this equation\r\n" ); document.write( "\r\n" ); document.write( " x^2 - y^2 = 45.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Factor left side to get\r\n" ); document.write( "\r\n" ); document.write( " (x-y)*(x+y) = 45.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "45 has these decompositions in the product of factors 1*45, 3*15 and 9*5.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "These decompositions produce these systems of equations\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "a) x - y = 1\r\n" ); document.write( " x + y = 45\r\n" ); document.write( "\r\n" ); document.write( " with the solution x = 23, y = 22;\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "b) x - y = 3\r\n" ); document.write( " x + y = 15\r\n" ); document.write( "\r\n" ); document.write( " with the solution x = 9, y = 6;\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "c) x - y = 5\r\n" ); document.write( " x + y = 9\r\n" ); document.write( "\r\n" ); document.write( " with the solution x = 7, y = 2.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "These are all possible solutions to the numbers of baskets collected by the children.\r\n" ); document.write( "\r\n" ); document.write( "There is NO other solutions.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Hence, the total pay was\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Solved.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |