document.write( "Question 963363: Bob is 5 years younger than twice marks age. Bob is 31.How old is Mark? \n" ); document.write( "
Algebra.Com's Answer #588569 by macston(5194)\"\" \"About 
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M=Mark's age; B=Bob's age=2M-5yrs=31yrs
\n" ); document.write( "2M-5yrs=31yrs Add 5 yrs to each side.
\n" ); document.write( "2M=36 yrs
\n" ); document.write( "M=18 yrs ANSWER: Mark is 18 years old.
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