document.write( "Question 1010229: The ages of a parent and child add up to 30years. In 3years times, the parent will be 4 times as old as the child. Fine the current ages of the parent and the child. \n" ); document.write( "
Algebra.Com's Answer #625679 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Call their ages NOW, p and c. Thus \n" ); document.write( "p + c = 30 so we have p = 30 - c \n" ); document.write( "Then \n" ); document.write( "p + 3 = 4(c + 3) \n" ); document.write( "Substitute in and get \n" ); document.write( "30 - c + 3 = 4(c + 3) \n" ); document.write( "33 - c = 4c + 12 \n" ); document.write( "21 = 5c \n" ); document.write( "c = 4.2 years \n" ); document.write( "p = 25.8 years \n" ); document.write( " |