document.write( "Question 815395: Charlie was 40 years old when his son Adam was born.How old was Charlie when he was 5 times as old as Adam? \n" ); document.write( "
Algebra.Com's Answer #490931 by TimothyLamb(4379)![]() ![]() You can put this solution on YOUR website! c = 40 \n" ); document.write( "a = 0 \n" ); document.write( "c - a = 40 \n" ); document.write( "c = 40 + a \n" ); document.write( "--- \n" ); document.write( "c = 5a \n" ); document.write( "40 + a = 5a \n" ); document.write( "40 = 4a \n" ); document.write( "--- \n" ); document.write( "a = 10 \n" ); document.write( "c = 50 \n" ); document.write( "--- \n" ); document.write( "Solve and graph linear equations: \n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php \n" ); document.write( "--- \n" ); document.write( "Solve quadratic equations, quadratic formula: \n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php \n" ); document.write( "--- \n" ); document.write( "Convert fractions, decimals, and percents: \n" ); document.write( "https://sooeet.com/math/fraction-decimal-percent.php \n" ); document.write( "--- \n" ); document.write( "Calculate and graph the linear regression of any data set: \n" ); document.write( "https://sooeet.com/math/linear-regression.php \n" ); document.write( " |