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Arithmetic Ability
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Q.
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
A.
35.55 km/hr
B.
36 km/hr
C.
71.11 km/hr
D.
71 km/hr
View Answer
Correct choice: C
Explanation:
Total time taken = (160/64 + 160/8)hrs = 9/2 hrs. Average speed = (320 x 2/9) km.hr = 71.11 km/hr.
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