document.write( "Question 977658: A is now five times as old as B, but 7 year from now she will be 3 times, as old as he will be then how old is A now.
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Algebra.Com's Answer #599274 by Cromlix(4381)![]() ![]() You can put this solution on YOUR website! Hi there, \n" ); document.write( "A is now 5 times as old as B \n" ); document.write( "A = 5B \n" ); document.write( "7 years from now she will be 3 times as old as B \n" ); document.write( "A + 7 = 3(B + 7) \n" ); document.write( "Replace A with 5B from 1st equation. \n" ); document.write( "5B + 7 = 3B + 21 \n" ); document.write( "Collect like terms \n" ); document.write( "5B - 3B = 21 - 7 \n" ); document.write( "2B = 14 \n" ); document.write( "B = 7 \n" ); document.write( "A is (7 x 5) = 35 yrs old now \n" ); document.write( "Hope this helps:-) \n" ); document.write( " |