87. A man travel from A to B a 39 km distance with a
speed of 15 km/hr and he travel from B to C 52
km distance with a speed of 18 km/hr. Find the
average speed of whole journey?
एक आदमी A से B 39 किमी. की दूरी, 15 किमी./घंटा की चाल से
जाता है और B से C 52 किमी. की दूरी, 18 किमी./घंटा की चाल
से जाता है। औसत चाल ज्ञात करो?
(a)95
(b) 760
(c) 25
(d)
630
38
Answers
Answered by
0
Answer:
Required average speed = Total distance coveredTotal time taken
=3×393626+3939+3952
=3×1312+13+14
=3×13×1213=36km/h
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