Distance to ETP =   D x H                         Where           D = total distance

                                    (O + H)                                              H = groundspeed home

                                                                                                O = groundspeed out

 

            D = 360 nm                                                 

            H = 180 + 15 = 195 kts                 Distance to PSR   = 360 x 195

            O = 180 – 15 = 165 kts                                                       360

                        (O + H)  = 360                                                 = 195 nm from A

                                                                                                    =  (360 – 195) nm

                                                                                                    = 165 nm from B