Question

If a task is completed in 20 days by 5 workers, how long will it take 10 workers to perform the same task?

Answer 1

Let the number of days for 10 workers to complete the task be x.

\(\frac{5}{10} = \frac{20}{x}\)

Cross-multiply

5x = 10 × 20

Simplify.

x = \(\frac{10 \times 20}{5}\)

x = 40

Therefore, 10 workers will require 40 days to complete the same task.

Answer 2

PrashantNayak, hello

Think about your answer, does it make sense?  We have more workers and now it takes longer to get the job done?!

The correct answer is 10 days.

5:10 = X:20

=> 10xX = 5x20

=> x = 5x20/10 = 10 days