document.write( "Question 83463This question is from textbook
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document.write( ": Sum of the present ages of Angie and her moether is 64 years. In eight years Angie will be three-fifths as old as her moether at that time. Find the present ages of Angie and her mother. \n" );
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Algebra.Com's Answer #59971 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Let A = Angie's present age; M = Mom's present age \n" ); document.write( ": \n" ); document.write( "Write an equation for each sentence: \n" ); document.write( ": \n" ); document.write( "\"Sum of the present ages of Angie and her mother is 64 years.\" \n" ); document.write( " A + M = 64 \n" ); document.write( " A = 64 - M; use for substitution later \n" ); document.write( ": \n" ); document.write( " \"In eight years Angie will be three-fifths as old as her mother at that time.\" \n" ); document.write( "(A + 8) = .6(M + 8) \n" ); document.write( "A + 8 = .6M + 4.8 \n" ); document.write( "A = .6M + 4.8 - 8 \n" ); document.write( "A = .6M - 3.2 \n" ); document.write( ": \n" ); document.write( "Find the present ages of Angie and her mother. \n" ); document.write( "Substitute (64-M) for A in the above equation: \n" ); document.write( "64 - M = .6M - 3.2 \n" ); document.write( "-M - .6M = - 3.2 - 64 \n" ); document.write( "-1.6M = -67.2 \n" ); document.write( "M = -67.2/-1.6 \n" ); document.write( "M = +42 yrs old \n" ); document.write( ": \n" ); document.write( "Find A: 64 - 42 = 22 yrs old \n" ); document.write( ": \n" ); document.write( "Check using the statement: \n" ); document.write( "\"In eight years Angie will be three-fifths as old as her mother at that time.\" \n" ); document.write( "(22 + 8) = .6(42 + 8) \n" ); document.write( " 30 = .6(50) proves our solutions \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( " |