Is it wise for a firm to employ a worker at $20 per hour when another worker does the same job for $10 per hour?

It would be a rational decision if the first worker was more than twice as productive as the second worker.

It would never be rational to pay a worker that much more than another.

It is illegal to pay a worker that much more than another.
The government will pay firms to give some workers extra pay to increase the total economy.

Question

Is it wise for a firm to employ a worker at $20 per hour when another worker does the same job for $10 per hour?

    It would be a rational decision if the first worker was more than twice as productive as the second worker.

    It would never be rational to pay a worker that much more than another.

    It is illegal to pay a worker that much more than another.
    The government will pay firms to give some workers extra pay to increase the total economy.