alleryకారు వేగాన్ని 5 km/h పెంచడం వల్ల అది 60 km మార్గాన్ని 1 గంట ముందుగా పూర్తి చేయగలుగుతుంది. దాని అసలు వేగం ఎంత?
A12 km/h
B15 km/h
C10 km/h
D20 km/h
Answer & Solution
Correct answer: B. 15 km/h
60/s - 60/(s+5) = 1 నుండి s(s+5) = 300 వస్తుంది, కాబట్టి s = 15 km/h.
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