An engineer left a point (point A) walking at 6.5 kps in a direction E 20° N (that is bearing of 70°). A cyclist leaves the same point at the same time in a direction E 40° S (that is bearing 130°) traveling at a constant speed. Find the average speed of the cyclist if the engineer and the cyclist are 80 km apart

after 5 hours.

A. 18.23 kph

C. 24.34 kph

B. 13.45 kph

D. 21.45 kph