alleryস্থিৰ পানীত 8 km/h দ্ৰুতিৰ এখন নাৱে 2 km/h সোঁতৰ সৈতে 30 km যায়। সোঁতৰ অনুকূলে যাত্ৰাটোৰ সময় কিমান?
A2 hours
B5 hours
C3 hours
D4 hours
Answer & Solution
Correct answer: C. 3 hours
সোঁতৰ অনুকূলে দ্ৰুতি হ'ল 10 km/h, গতিকে 30 / 10 = 3 hours।
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