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anonymous

  • one year ago

four men can complete a job in three hours. five women can complete the same job in 2 hours. How many hours would it take a team of 2 men and 3 women to complete the job? Please help

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  1. anonymous
    • one year ago
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    2.15, because a man can do 0.0825 of the job in an hour and a woman can do 0.1 of the job, so 2 men and 3 women do 0.465 of the job in 1 hour, so they need to work 2.15 hours.

  2. amilapsn
    • one year ago
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    4M J 3h 2M (1/2)J 3h 2M(1/6)J 1h=======1 5W J 2h 1W (1/5)J 2h 1W (1/10)J 1h 3W (3/10)J 1h=======2 by 1 & 2: (2M+3W) (1/6+3/10)J 1h (2M+3W) (7/15)J 1h (2M+3W) J (15/7)h

  3. amilapsn
    • one year ago
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    M-Men W-Women J-Job h-hours

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