document.write( "Question 1150918: Isabelle is 5 years older than her brother joseph ,in 15years the sum of their age is 65. Find their present age \n" ); document.write( "
Algebra.Com's Answer #772485 by math_helper(2461)\"\" \"About 
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Let n = Isabelle's age
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\n" ); document.write( "\n" ); document.write( "(n+15) + (n-5+15) = 65
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\n" ); document.write( "\n" ); document.write( "Solve for n (Isabelle's age) then n-5 is Joseph's age.\r
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