Question

19 men working 7 – hours a day can finish a job in 21 days. How many hours a day must
45 men work to complete it in 7 days?

plzz tell the correct answer and explain step by step ​

Answer 1

Step-by-step explanation: 19men,21 days = 7 hrs

                                             19men,1 day = 1/3 hrs

                                             1men,1 day = 1/57 hrs

                                             45men,7 day = 45*7/57 hrs = 315/57 hrs = 5 10/19 hrs

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Answer 2

Step-by-step explanation:

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