document.write( "Question 868605: Please help me solve this problem: when l was 10yrs my sister was half my age, now l am 20yrs old, how old is my sister?\r
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Algebra.Com's Answer #523669 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "when l was 10yrs my sister was half my age (0r 5yrs old)
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document.write( "10 years later...sister is 15 yrs old \n" );
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