Question

A man on tour travel first 160 km at 64 km/he. and next 160 km at 80km/hr. The average speed for he first 320 km of the tour is:

a 35.55 b 36
c71.11 s 71
​answer with explanation

Answer 1

Answer:

71.11 km /hr

Step-by-step explanation:

In this question first calculate the total time taken by the man to cover 320 km distance and then divide it by total time. Hence, the average speed for the first 320 km of the tour is 71.11Km/hr.

Answer 2

Answer:

Explanation:

Total time taken    = (160/64 + 160/8)hrs

                           = 9/2 hrs.

Average speed    = (320 x 2/9) km.hr

                         = 71.11 km/hr.

Step-by-step explanation:

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