Question

if 12 worker can build a wall in 50 hour how many workers will be required to do the same work in 40 hours​

Answer 1

Answer:

If workers are changed n times, the time will change by 1/n times of the initial time.

1/n of initial hour = 30

(1/n) 50 = 30

n = 50/30

12 n = 12*50/30 = 20 workers

20 workers are needed.

Step-by-step explanation:

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Answer 2

Answer:

15

Step-by-step explanation:

workers. hours

12. 50

x. 40

12×50=x×40

40 is gone to another side it's change's to division

12×50÷40=X

600÷40=X

15=X