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anonymous
 one year ago
Word Problems Help!
12 men take 6 hours to finish a work. After the 12 men have worked for 1 hour, the contractor decides to call in 8 more men so that the work can be completed earlier. How many hrs would 20 men take to complete the remaining work?
anonymous
 one year ago
Word Problems Help! 12 men take 6 hours to finish a work. After the 12 men have worked for 1 hour, the contractor decides to call in 8 more men so that the work can be completed earlier. How many hrs would 20 men take to complete the remaining work?

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Hero
 one year ago
Best ResponseYou've already chosen the best response.1@JustinSpeedster you still here?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0work = men/hour \[\frac{ 12 }{ 6 }\]\[\frac{ 12 }{ 6 }\  \frac{ 1 }{ 5 }\] is that right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Hero sorry for the afk...can you teach me how to solve it? I'm stuck.

Hero
 one year ago
Best ResponseYou've already chosen the best response.1The key to solving this Is Keeping track of the total man hours

Hero
 one year ago
Best ResponseYou've already chosen the best response.1It takes 12 men 6 hours to complete the Work

Hero
 one year ago
Best ResponseYou've already chosen the best response.1multiplying 12 by 6 gets you 72 total man hours necessary to complete the job.

Hero
 one year ago
Best ResponseYou've already chosen the best response.1They tell us that the 12 men have already worked 1 hour or 12 man ho urs so We Subtract 12 from 72 to get 60 Man hours remaining

Hero
 one year ago
Best ResponseYou've already chosen the best response.1They add eight more men to this project so at that point , we have 20 men and 60 Man hours left to complete the job. How many hours will it take?

Hero
 one year ago
Best ResponseYou've already chosen the best response.1At this point you divide 60 by 20 to get the number of hours it will take the 20 men to complete the job.

Hero
 one year ago
Best ResponseYou've already chosen the best response.1yes three hours, now try to understand the reasoning behind this approach.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0why did you multiply 12 by 6?

Hero
 one year ago
Best ResponseYou've already chosen the best response.1To Calculate the total man hours necessary to complete the work.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0OH I see..I guess it was easy after analyzing it. I feel like a stupid now. The conflict that I encountered was the forming of equation. I failed to calculate the man hours....I was focused on solving the rate on how 1 worker/hour to solve everything. Oh well. Thanks for the help, HERO. Another lesson well taught. :D

Hero
 one year ago
Best ResponseYou've already chosen the best response.1I don't like solving it using fractions. That approach is slightly unintuitive.

Hero
 one year ago
Best ResponseYou've already chosen the best response.1my first train of thought is to calculate total man hours Instead of rate
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