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A ship leaves port p for port R though port Q.Q is 200 km on a bearing of #220^0# from P.R is 420 km on the bearing of #140^0# from Q.
a) Using the scale 1:4,000,000, draw a diagram, showing the relative positions of the three ports P, Q, and R.
b) By further drawing on the same diagram, determine how far R is to the east of p
c) If the ship has sailed directly from P to R at an average speed of 40 knots, find how long it would have taken to arrive at R.(Take 1 nautical mile = 1.853 km)