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Bijit Sarkar

· started a discussion

· 1 Months ago

Shortcut (Question: 367585.0 )

When Distance is constant,
Avg. Speed = (2s1.s2)/(s1+s2)

Question:

A motorist travels to a place 150 km away at an average speed of 50 km/hour and returns at 30 km/hour. What is the average speed for the whole journey ?

Options:
A)

35 km/hour

B)

37 km/hour

C)

37.5 km/hour

D)

40 km/hour

Solution:

Ans: (c)

  

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