document.write( "Question 1125340: Andrew is 33 years old. Ciara is 21 years old. How many years ago was Andrew's age 5 times Ciara's age? \n" ); document.write( "

Algebra.Com's Answer #741646 by greenestamps(13200) $\"\"$ $\"About$

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\n" ); document.write( "There are numerous ways to set up this problem. My first thought is to use the fact that the difference in their ages is 12 years to find when Andrew's age was 5 times Ciara's age. So

\n" ); document.write( "let x = Ciara's age when Andrew was 5 times as old
\n" ); document.write( "then 5x = Andrew's age then

\n" ); document.write( "The difference in their ages is 12 years:

\n" ); document.write( " $\"5x-x+=+12\"$
\n" ); document.write( " $\"4x+=+12\"$
\n" ); document.write( " $\"x+=+3\"$

\n" ); document.write( "It was when Ciara was 3 years old that Andrew was 5 times her age.

\n" ); document.write( "Ciara is now 21, so that was 18 years ago.

\n" ); document.write( "ANSWER: 18 years ago \n" ); document.write( "

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