alleryএকেখন নাৱে (স্থিৰ পানীত 8 km/h, 2 km/h সোঁত) এইবাৰ সোঁতৰ বিপৰীতে 30 km অতিক্ৰম কৰে। ইয়াৰ বাবে কিমান সময় লাগিব?
A3 hours
B6 hours
C5 hours
D4 hours
Answer & Solution
Correct answer: C. 5 hours
সোঁতৰ প্ৰতিকূলে দ্ৰুতি হ'ল 6 km/h, গতিকে 30 / 6 = 5 hours।
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