document.write( "Question 552922: Carol is twice as old as Jane. Five years ago she was 3 times as old as Jane. How old is Jane? \n" ); document.write( "
Algebra.Com's Answer #360567 by Maths68(1474)\"\" \"About 
You can put this solution on YOUR website!
Let
\n" ); document.write( "Present age of Carol = c
\n" ); document.write( "Present age of Jane = j\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Given
\n" ); document.write( "Carol is twice as old as Jane.
\n" ); document.write( "c=2j..................(1)
\n" ); document.write( "Five years ago
\n" ); document.write( "Carol was = c-5
\n" ); document.write( "Jane was = j-5
\n" ); document.write( "Then
\n" ); document.write( "Carol was 3 times as old as Jane.
\n" ); document.write( "c-5=3(j-5)
\n" ); document.write( "c-5=3j-15
\n" ); document.write( "c=3j-15+5
\n" ); document.write( "c=3j-10...............(2)
\n" ); document.write( "Put the value of c from (1) to (2)
\n" ); document.write( "2j=3j-10
\n" ); document.write( "2j-3j=-10
\n" ); document.write( "-j=-10
\n" ); document.write( "Multiply by -1 both sides of above equation
\n" ); document.write( "j=10
\n" ); document.write( "Put the value of j in (1)
\n" ); document.write( "c=2j
\n" ); document.write( "c=2(10)
\n" ); document.write( "c=20\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Present age of Carol = c = 20
\n" ); document.write( "Present age of Jane = j = 10
\n" ); document.write( " \n" ); document.write( "
\n" );