SSC GD Constable practice question
The speed of a boat in still water is 21 km/hr and the speed of the stream is 4 km/hr. Find the upstream speed of the boat.
From a SSC GD Constable Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (B) 17 km/hr
Upstream speed = Boat speed - Stream speed = 21-4 = 17 km/hr.
हिंदी में प्रश्न
शांत जल में नाव की चाल 21 किमी/घंटा है और धारा की चाल 4 किमी/घंटा है। नाव की धारा के प्रतिकूल (upstream) चाल ज्ञात करें।
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सही उत्तर: (B) 17 km/hr
Upstream speed = Boat speed - Stream speed = 21-4 = 17 km/hr.
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