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Q1
:
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
71.11 km/hr
B
36 km/hr
C
35.55 km/hr
D
71 km/hr
Solution
ANS:
C
- 71.11 km/hr
Total time taken =
160
+
160
hrs.
=
9
hrs.
64
80
2
Average speed =
320 x
2
km/hr
= 71.11 km/hr.
9
Share :
hrs.
Average speed =