document.write( "Question 842244: john is three times as old as sally. john is presently 12 years old. how old would john be when he is twice as old as sally? \n" ); document.write( "

Algebra.Com's Answer #507473 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "john is three times as old as sally. john is presently 12 years old. 
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document.write( "John is now 12 and sally is now 4
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document.write( "how old would john be when he is twice as old as sally?
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document.write( "Let x represent the time before john is twice as old as sally
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document.write( "  12 + x = 2(4 + x)
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document.write( "  12 + x = 8 + 2x
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document.write( "     4 = x  (In four years when John is 
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document.write( "CHECKING our answer***In four years...
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document.write( "   16 = 2•8
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document.write( "Wish You the Best in your Studies.
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