Question 97910
Distance covered by the woman in 10 minutes =speed* time
                                    =6 * 10/60   (since 10 minutes = 10/60 hr) 
                                    = 1 mile


Distance covered by the man in 10 minutes = 12* 10/60
                                          = 2mile

therefore they are (1+2) = 3miles apart after 10 minutes