alleryএকটি 100 km যাত্রায় প্রথম 60 km পথ 30 km/h গতিতে এবং বাকি 40 km পথ 20 km/h গতিতে অতিক্রম করা হয়। গড় গতিবেগ কত?
A24 km/h
B26 km/h
C25 km/h
D28 km/h
Answer & Solution
Correct answer: C. 25 km/h
সময় যথাক্রমে 2 h এবং 2 h, তাই 4 h-এ 100 km দেয় 25 km/h।
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