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 320 km of the tour is:
Choose the most appropriate option
A) 35.55 km/hr B) 36 km/hr C) 71.11 km/hr D) 71 km/hr E) 81 km/hr
Total time taken =(160/64 + 160/80) hrs. =	9/2 hrs.   Average speed =(320 x 2/9) km/hr = 71.11 km/hr.   Answer:71.11 km/hr
<result>C</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 320 km of the tour is: