A man on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. The average speed for the first 250 km of the tour is:  Choose the correct choice from the following answers:	A) 55.55 km/hr	B) 35.55 km/hr	C) 71.11 km/hr	D) 36 km/hr	E) 71 km/hr
Total time taken = 160/64 + 160/80 = 9/2 hours   --&gt; Average speed = 250 x 2/9 = 55.55 km/hr.   55.55 km/hrnswer : 55.55 km/hr.
<result>A</result>
A man on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. The average speed for the first 250 km of the tour is: