alleryএকজন ব্যক্তি 5 km/h গতিবেগে হাঁটেন। 12 km-এর জন্য তাঁর কতটা সময় প্রয়োজন?
A2 h 40 min
B2 h 24 min
C2 h 30 min
D2 h 12 min
Answer & Solution
Correct answer: B. 2 h 24 min
12 / 5 = 2.4 hours, এবং 0.4 hour হলো 24 minutes।
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