document.write( "Question 856683: frank is eight years older than his sister. In three years he will be twice as she is. How old are they?
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Algebra.Com's Answer #516200 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "Let x represent sister's age   ⇒   is Frank's age
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document.write( "Question States*** in 3 years...
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document.write( " (x+8) + 3 = 2(x+3)
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document.write( "   x + 11 = 2x + 6
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document.write( "        5 = x, sister's age.  frank is 13
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document.write( "CHECKING our answer*** In 3 years, Frank will be twice sister's age.
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document.write( "  16 = 2•8
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document.write( "Wish You the Best in your Studies. \n" );
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