alleryഒരു ട്രക്ക് 6 കിലോമീറ്റർ/മണിക്കൂർ വേഗത കുറയ്ക്കുകയാണെങ്കിൽ, 72 കിലോമീറ്റർ റൂട്ടിൽ 1 അധിക മണിക്കൂർ എടുക്കും. അതിന്റെ യഥാർത്ഥ വേഗത എത്രയായിരുന്നു?
A20 km/h
B24 km/h
C30 km/h
D36 km/h
Answer & Solution
Correct answer: B. 24 km/h
72/(s-6) - 72/s = 1 s(s-6) = 432 നൽകുന്നു, അതിനാൽ s = 24 km/h.
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