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ഒരു ബസ് A-യിൽ നിന്ന് B-ലേക്ക് 30 km/h വേഗതയിൽ പോകുന്നു, തുടർന്ന് അത് അവിടെ നിന്ന് 40 km/h വേഗതയിൽ മടങ്ങുന്നു, അപ്പോൾ, ബസിന്റെ ശരാശരി വേഗത കണ്ടെത്തുക.

A24.20 km/h

B42 km/h

C37 km/h

D34.28 km/h

Answer:

D. 34.28 km/h

Read Explanation:

രണ്ട് വേഗത നൽകുമ്പോൾ, ശരാശരി വേഗത = 2xy/(x + y) ശരാശരി വേഗത = (2 × 30 × 40)/(30 + 40) = (2 × 30 × 40)/70 = 34.28 km/h


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