alleryএকই নৌকা (স্থির জলে 8 km/h, স্রোত 2 km/h) এবার স্রোতের প্রতিকূলে 30 km অতিক্রম করে। এতে কত সময় লাগে?
A3 ঘণ্টা
B6 ঘণ্টা
C5 ঘণ্টা
D4 ঘণ্টা
Answer & Solution
Correct answer: C. 5 ঘণ্টা
স্রোতের প্রতিকূলে গতিবেগ 6 km/h, সুতরাং 30 / 6 = 5 hours।
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