A man covers half of his journey at 6 km/h and the remaining half at 3 km/h. His average speed is?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
2 (4 kmph)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
Solution:
Given that,
A man covers half of his journey at 6 km/h
And The remaining half at 3 km/h.
We know that,
Average speed = 2xy/(x + y)
= (2 × 6 × 3)/(6 + 3)
= 36/9 = 4 kmph
