document.write( "Question 1105529: Marks is six years old and his sister tina is half of his age so when mark is 100 years old than what is the age of tina \n" ); document.write( "

Algebra.Com's Answer #720394 by ikleyn(52803) $\"\"$ $\"About$

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document.write( "Marks is 6 years old, his sister is 3 years old.\r\n" );
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document.write( "It should be enough for you to answer the problem question on your own.\r\n" );
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