Sergeant Marco's Maintenance Check
Date: Sat, 11 Mar 1995 15:26:31 AST From: Richard Seguin Subject: Could you help me with this question? 1. Corporal Jones takes 12 h to complete a planned maintenance check on an anti-submarine helicopter. Jones had been working on a helicopter for 4 h when sergeant Marco arrived to help him finish the job. They complete the check in 2 H. How long would it have taken Sergeant Marco to complete the job alone?
Date: 30 Mar 1995 23:35:39 -0500 From: Elizabeth Weber Subject: Re: Hello! If Jones has been working for 4 h when Marco joins him, how many Jones-hours of work does he have left? If he then works another 2 h next to Marco, how many Jones-hours of work are left that Marco must have done? If Marco can do this many Jones-hours of work in 2 hours, how many Jones-hours of work can he do in an hour? How long will it take him to do 12 Jones-hours of work? If any of this isn't clear, or if you need more help, write back to us! --Elizabeth, a math doctor
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