Question

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​

Answer 1

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

Answer 2

The time it takes 9 men working at the same pace to build this wall​ is 81 hours

Ratio and proportions

Let x be the time are needed for 9men

If it takes five-man take 45 hours to build a wall then, we can have the ratio

45：5 = x：9

5x = 45×9

5x = 405

x = 81

Hence the time it takes 9 men working at the same pace to build this wall​ is 81 hours

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