alleryওপৰলৈ উঠোঁতে এখন লৰীৰ গড় দ্ৰুতি 20 km/h আৰু একেটা পথৰে নামি আহোঁতে 30 km/h হয়। গোটেই যাত্ৰাটোৰ বাবে গড় দ্ৰুতি কিমান?
A22 km/h
B25 km/h
C24 km/h
D26 km/h
Answer & Solution
Correct answer: C. 24 km/h
সমান দূৰত্বৰ ক্ষেত্ৰত পোৱা যায় 2 x 20 x 30 / 50 = 24 km/h।
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