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Q.
A man walks 6 km at a speed of 1 1/2kmph, runs 8 km at a speed of 2 kmph and goes by bus another 32 km. Speed of the bus is 8 kmph. Find the average speed of the man in kmph. A)4 3/14 B)4 2/13 C)2 4/13 D)3 4/14
A.
Option A
B.
Option B
C.
Option C
D.
Option D
View Answer
Correct choice: B
Explanation:
Man walked 6 km at 1.5 kmph, again he walked 8 km at speed of 2 kmph and 40 km at a speed of 8kmph time taken indivisually: => 6/1.5 = 4 m => 8/2 = 4 m => 40/8 = 5 m Average speed of man= total distance/ total time => 54/13 = 4213 kmph
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