Question

420 workers take 15 days to complete a peiece of
work. How many workers should be employed, if
the same work is to complete in 12 days?​

Answer 1

Answer:

525 workers

Step-by-step explanation:

It is Indirect proportion

420 workers = 15 days

x workers = 12 days

so 420 x 15 / 12

= 525 workers must be employed to complete the work in 12 days

Answer 2

According to the information provided in the question.

It is stated in the preceding question that,

The presented information is 420 workers take 15 days to complete a

piece of work,

We need to find how many more  workers should be employed, if the  same work is to be completed in  12 days.

As a result, the simplify equation is,

Let the required worker be x,

$420\times 15=x\times 12\\6300=12x\\x=\frac{6300}{12}\\x=525$

Therefore the required worker for completing the same work is 525.