Thaddeus shakes his head as he pays $12.37 to the clerk for lunch. Complaining to a friend, Thaddeus says, "Do you realize that is 0.2% of my monthly income?" His friend replies, "I think you made a mistake. That should be 2%. You messed up on the decimal point." (a) Assuming Thaddeus is not wrong, what is his monthly income? (b) If Thaddeus' friend is correct, what is Thaddeus' monthly income?
