Consider the following premises. If it is late, then Charles is working. If Charles works, then Richard is driving a car. Richard is not driving a car. If Charles works, then it is late. Can we infer the following from them? It is not late.
 From the fact that if Charles works, then it is late, and that if it is late, then Charles is working we can infer that Charles is working if and only if it is late. From the fact that if Charles works, then Richard is driving a car, and that Richard is not driving a car we can infer that Charles is not working. Finally, from the fact that Charles is working if and only if it is late, and that Charles is not working we can infer that it is not late. Therefore, the answer is yes.