rethabile4554 rethabile4554

04-03-2022
Mathematics

contestada

5 men take 45hours to build a wall.how long will it take 9men working at the same wall?

Respuesta :

Аноним Аноним

04-03-2022

Answer:

25 hours

Step-by-step explanation:

It takes 5 men 45 hours to build a wall.

So, if no. of men increases by 1.8 [∴ 5 x 1.8 = 9],

then time taken reduces by that same amount.

=> 45 hours / 1.8

=> 45 / (9/5)

=> 45 x 5 / 9

=> 5 x 5

=> 25 hours

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