Some PPL navigation questions that I dont understand
1)DME station is situated at an altitude of 1000 ft AMSL. QNH = 1013.25 hPa. The aircraft flies at FL370, 15 NM DME from the station. DME readout will be:
a.16nm b.15nm c18nm d.37nm
2)Variation = 3° E, Magnetic track = 188 °, Compass heading = 190 °. True track and Compass deviation values are respectively:
a. 194°, +4. b. 189°, -3. c. 185°, -2. d. 191°, -2.
3)In windless conditions at 0830 UTC Pilot read radial = 315 degrees. Continuing flight with true track heading = 180 degrees at 0840 UTC he reads radial = 270 degrees. Assuming his ground speed is 240 kt, calculate distance to NDB at 0840 UTC:
a. 32 NM. b. 48 NM. c. 38 NM. d. 40 NM.