A monopolist faces two consumer groups: old and young. The inverse demand of old clients for the output of the monopolist is Po=100-2Qo. This implies that MRo=100-4Qo. The inverse demand of young clients for the output of the monopolist is Py=80-Qy. This implies that MRy=80-2Qy. The marginal cost of supplying any type of client is MC=10. If the monopolist can price discriminate between the two groups (i.e., charge a different uniform price to each group), what price will old and young clients be charged?