1. VOR's use frequencies in the VHF radio spectrum. As far as I am aware the equation for VHF range is 1.25 x (√transmitter height + √reciever height). Therefore to answer your question the range is approximately 181nm.
2. DME's give slant range to the transmitter, therefore to answer the question the horizontal range to the transmitter needs to be found using good old Pythagoras' theorem. I calculate the horizontal distance to be 46.77nm, now it is just a matter of dividing this distance by the groundspeed of the aircraft to give the EET. I calculate it to be 7 minutes and 20 seconds.