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ഒരു ബസ് യാത്രയുടെ ആദ്യത്തെ 120 Km ദൂരം ശരാശരി 30 Km/h വേഗത്തിലും അടുത്ത 120 Km ശരാശരി 20 Km/h വേഗത്തിലുമാണ് സഞ്ചരിച്ചത്. മുഴുവൻ യാത്രയിലെ ശരാശരി വേഗം എത്രയാണ്?

A25 Km/h

B24 Km/h

C20 Km/h

D30 km/h

Answer:

B. 24 Km/h

Read Explanation:

ദൂരം തുല്യമായതിനാൽ,

ശരാശരി വേഗത = 2xyx+y\frac{2xy}{x + y}

ശരാശരി വേഗത = 2×30×2050=24\frac{2\times30\times20}{50} =24


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