alleryএকজন চালক 40 km/h গতিতে 3 ঘণ্টা এবং তারপর 60 km/h গতিতে 2 ঘণ্টা গাড়ি চালান। গড় গতিবেগ কত?
A46 km/h
B48 km/h
C50 km/h
D52 km/h
Answer & Solution
Correct answer: B. 48 km/h
5 hours-এ দূরত্ব হল 120 + 120 = 240 km, সুতরাং গড় হল 48 km/h।
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