The following is a question from Ground Studies for Pilots-Navigation by R.B.Underdown.
Ch-6
Pg74
q.8 The distance flown by an aircraft in 40 seconds at a groundspeed of 480kts is represented on a chart by a line 3.6cm long. The chart scale denominator is:
a) 274200
b) 1 865 000
c) 3 125 000
d) 2 742 000
The correct answer from the key at the back is (d). How is that?
