Question

If run continuously 10 machines can produce 10 parts i. 10 seconds. How many machines would be needed to produce 100 parts in 100 seconds.

Answer 1

10 machines = 10 parts. So, 1 machine = 1 part.
Time taken to produce 1 part = 10 seconds.
100 parts = 10 machines. As 10 seconds x 10 machines  = 100 parts.
So, answer is 10 machines.

Answer 2

We don't need extra machines 10 machines is sufficient