Question

20 workers can finish a piece of work in 30 days. How many workers are required to finish the work in 12 days?​

Answer 1

Given:-

•In 30 days a piece of work can finish by 20 workers.

To Find:-

•How many workers complete the work in 12 days.

Solution:-

$\: \: \sf \therefore \: in \: 30 \: days \: \: piece \: of \: work \: can \: finish \: by = 20 \: workers \\ \\ \: \: \sf \: in \: 1 \: day \: a \: piece \: of \: work \: can \: finish \: by = \frac{30}{20} \\ \\ \: \: \sf \because \: in \: 12 \: days \: a \: piece \: of \: work \: can \: finish \: by = \frac{30}{20} \times 12 \\ \\ \: \: \sf \: = 18 \: workers$

Henceforth,18 workers will finish a piece of work in 12 days.

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Extra Info....

•A certain amount of time(T) is taken to complete a certain work(W).

•The number of units of work done per unit time is called the rate of work(R).

•Work Done= Time taken × Rate of work

•Rate of work= 1/ time taken

•Time taken = 1/ Rate of work