document.write( "Question 322626: If Julia were ten more that two times her present age , she will be four times as old as she was four years ago . How old is she now .
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Algebra.Com's Answer #230960 by jessica43(140)![]() ![]() ![]() You can put this solution on YOUR website! To solve this, you need to write it as two different equations and then set them equal to each other. \n" ); document.write( "First we know that at a future age (we will call this F), Julia will be 10 more than 2 times her present age (we will call this P). This can be written as: \n" ); document.write( "F = (2*P) + 10 \n" ); document.write( "Secondly, we know at this future age she will be four times as old as she was four years ago (or present age minus 4): \n" ); document.write( "F = 4* (P - 4) \n" ); document.write( "Now since both equations equal F, we can set them equal to each other and solve. \n" ); document.write( "(2*P)+10 = 4*(P-4) (multiply the right side out) \n" ); document.write( "2P + 10 = 4P - 16 (now subtract 2P from both sides) \n" ); document.write( "10 = 2P - 16 (now add 16 to both sides) \n" ); document.write( "26 = 2P (divide each side by 2) \n" ); document.write( "13 = P \n" ); document.write( "So Julia's present age is 13 years old. \n" ); document.write( " |