i five man take 45 hours to build a wall how long will it take 9 men working at the same pace to build this wall

1 answer:

4 0

Answer:

81 hours

Step-by-step explanation:

Let x be the time are needed

45：5 = x：9

5x = 45×9

5x = 405

x = 81

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i five man take 45 hours to build a wall how long will it take 9 men working at the same pace to build this wall​