Given is :
The annual income of Richard = $34200
Hence, his monthly income becomes = = $2850
So, the maximum amount that he can spend per month paying off credit cards and loans and not be in danger of credit overload can be a maximum of 20% of this income.
So, 20% of 2850 is = $570
Hence, approximately $570 can be spent a month.
As, the question has no options to choose from, but the question is complete in itself, so this is the best possible answer.