allery5 km/h গতিত খোজ কাঢ়িলে এজন ল'ৰাৰ 6 minutes পলম হয়, কিন্তু 6 km/h গতিত গ'লে তেওঁ 6 minutes সোনকালে পায়। তেওঁৰ গন্তব্যস্থান কিমান দূৰত?
A4 km
B6 km
C8 km
D5 km
Answer & Solution
Correct answer: B. 6 km
d/5 - d/6 = 12 min = 0.2 h-ৰ পৰা পোৱা যায় d/30 = 0.2, গতিকে d = 6 km।
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