alleryএখন নাও সোঁতৰ অনুকূলে 18 km/h আৰু সোঁতৰ প্ৰতিকূলে 10 km/h গতিত চলে। স্থিৰ পানীত ইয়াৰ দ্ৰুতি কিমান?
A8 km/h
B14 km/h
C16 km/h
D12 km/h
Answer & Solution
Correct answer: B. 14 km/h
স্থিৰ পানীত দ্ৰুতি হ'ল দুয়োটাৰ গড়, (18 + 10) / 2 = 14 km/h।
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