document.write( "Question 799730: a girl is half her mothers age. the mother is five years younger than her father. they have all have a total of 100 years combined. how old is the girl. \n" ); document.write( "
Algebra.Com's Answer #482771 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! a girl is half her mothers age. the mother is five years younger than her father. they have all have a total of 100 years combined. how old is the girl. \n" ); document.write( "--------------------- \n" ); document.write( "Equations: \n" ); document.write( "g = (1/2)m \n" ); document.write( "m = f - 5 \n" ); document.write( "g + m + f = 100 \n" ); document.write( "------ \n" ); document.write( "Substitute for \"g\" and for \"f\" and solve for \"m\":: \n" ); document.write( "(1/2)m + m + m+5 = 100 \n" ); document.write( "(5/2)m = 95 \n" ); document.write( "m = 38 (mother's age) \n" ); document.write( "g = (1/2)m = 19 (daughter's age) \n" ); document.write( "f = m+5 = 43 (father's age) \n" ); document.write( "================================ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "======================= \n" ); document.write( " \n" ); document.write( " |