document.write( "Question 313048: amandas age is 8 yrs older than kim. if the product of thier age is 105 yrs, what are their ages? \n" ); document.write( "
Algebra.Com's Answer #223866 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! amandas age is 8 yrs older than kim. if the product of thier age is 105 yrs, what are their ages? \n" ); document.write( "-------------------- \n" ); document.write( "Equations: \n" ); document.write( "a = k + 8 \n" ); document.write( "ak = 105 \n" ); document.write( "------------------------ \n" ); document.write( "Substitute for \"a\" and solve for \"k\": \n" ); document.write( "k(k+8) = 105 \n" ); document.write( "k^2 + 8k - 105 = 0 \n" ); document.write( "(k+15)(k-7) = 0 \n" ); document.write( "----------------- \n" ); document.write( "Positive Solution: \n" ); document.write( "k = 7 (Kim's age now) \n" ); document.write( "--- \n" ); document.write( "Since a = k+8, a = 15 (amanda's age now) \n" ); document.write( "============================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |