document.write( "Question 294415: Bill is one year less than twice as old as his sister Caroline. The total of their ages is 26. How old is Bill? \n" ); document.write( "

Algebra.Com's Answer #212314 by Fombitz(32388) $\"\"$ $\"About$

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Let B be Bill's age, C be Caroline's age.
\n" ); document.write( "1. $\"B=2C-1\"$
\n" ); document.write( "2. $\"B%2BC=26\"$
\n" ); document.write( "Substitute eq. 1 into eq. 2 and solve for C.
\n" ); document.write( " $\"B%2BC=26\"$
\n" ); document.write( " $\"2C-1%2BC=26\"$
\n" ); document.write( " $\"3C=27\"$
\n" ); document.write( " $\"C=9\"$
\n" ); document.write( "Then from eq.1,
\n" ); document.write( " $\"B=2C-1=18-1=17\"$
\n" ); document.write( "Bill is 17 and his sister is 9. \n" ); document.write( "

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