alleryএখন ট্ৰামে এটা পথৰ এক-তৃতীয়াংশ 20 km/h গতিত আৰু বাকী দুই-তৃতীয়াংশ 40 km/h গতিত অতিক্ৰম কৰে। ইয়াৰ গড় দ্ৰুতি কিমান?
A30 km/h
B35 km/h
C28 km/h
D32 km/h
Answer & Solution
Correct answer: A. 30 km/h
60 km পথৰ বাবে, 20 km-ত 1 h আৰু 40 km-ত 1 h সময় লাগে, যাৰ ফলত 60 / 2 = 30 km/h পোৱা যায়।
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