A contractor finds that Crew A takes 9 1/2 hours to construct a retaining wall...
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A contractor finds that Crew A takes 9 1/2 hours to construct a retaining wall and Crew B can do the same job in 7 1/2 hours. If Crew A and Crew B work together, how long will it take them to construct the retaining 2 wall? a) Let h = the time to complete the job. Write the equation you would use to solve this problem. b) Now solve your equation. Give your answer first as a reduced fraction, and then a decimal rounded to 3 places. Working together, the two crews will construct the wall in which as a decimal is hours. hours (fraction),
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