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A man can row a distance of 900 meters a...

A man can row a distance of 900 meters against the stream in 12 minutes and returns to the starting point in 9 minutes. What is the speed (in km/h) of the man in still water ? /
एक व्यक्ति धारा के विपरीत 900 मीटर की दूरी नाव से 12 मिनट में तय करता है तथा आरंभिक बिंदु पर 9 मिनट में पहुँचता है | स्थिर जल में व्यक्ति की चाल (किमी/घंटा में ) कितनी होगी ?

A

6

B

5

C

`5(1)/(4)`

D

`4(1)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
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A person can row a distance of 4 km upstream in 1 hour 20 minutes and can row back to the starting point in just 24 minutes. How much time (in hours) will he take to row 13 km in still water? / एक व्यक्ति धारा के विपरीत 4 किमी की दूरी 1 घंटा 20 मिनट में तय कर सकता है और अपने आरंभिक बिंदु तक केवल 24 मिनट में वापस पहुँच सकता है | स्थिर जल में 13 किमी की दूरी तय करने में उसे कितना वक्त (घंटे में) लगेगा ?

A man can row 15 km per hour downstream and 9 km per hour upstream. The speed (in km/hour) of the boat in still water is- एक व्यक्ति अधोप्रवाह में 15 किमी/घंटा की गति से और ऊर्ध्वप्रवाह में 9 किमी/घंटा को दर से नाव चला सकता है। स्थिर जल में नाव की गति (किमी/घंटा में) कितनी होगी?

A boat moves downstream at the rate of 1 km in 7 1/2 minutes and upstream at the rate of 5km an hour. What is the speed (in km/hour) of the boat in the still water? एक नौका 7 1/2 मिनट में 1 किमी की गति से निचल प्रवाह में जाती है और 1 घंटे में 5 किमी को ग॒ति से ऊपरी प्रवाह में जाती है। स्थिर जल में नौका की गति (किमी/घंटा में) कितनी होगी?

A boat covers 64 km upstream in 8 hours and 120 km downstream in 12 hours. What is the speed (in m/s) of the boat in still water? एक नाव धारा के प्रतिकूल 8 घंटे में 64 किमी तथा धारा के अनुकूल 12 घंटे में 1210 किमी की दूरी तय कर सकती है | स्थिर जल में नाव की चाल ( मीटर/सेकंड में ) क्या होगी ?

An athlete crosses a distance of 900 m in 10 minutes. What is his speed in km per hour? एक एथलीट 900 मीटर की दूरी 10 मिनट में तय करता है। किमी/घंटा में उसकी चाल कितनी है?

A person covers 700 m distance in 6 minutes. What is his speed in km/h? एक व्यक्ति 6 मिनट में 700 मीटर की दूरी तय करता है। किमी/घंटा में उसकी चाल कया है?

A boat can go 30 km downstream and 24 km upstream in 2 hours 27 minutes.Also, it can go 20km downstream and 8 km upstream in 74 minutes. What is the speed of the boat in still water in km/h? एक नाव 2 घंटे 27 मिनट में 30 किमी धारा के अनुकूल और 24 किमी धारा के प्रतिकूल जा सकती है | साथ ही, यह 74 मिनट में 20 किमी धारा के अनुकूल और 8 किमी धारा के प्रतिकूल जा सकती है | स्थिर जल में नाव की चाल ( किमी/घंटा में ) ज्ञात करें |

GAGAN PRATAP -BOAT & STREAM-MULTIPLE CHOICE QUESTIONS
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  5. The speed of a boat in still water is 18 km/h and the speed of the cur...

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  14. A motorboat in still water travels at a speed of 36 kmph . It ...

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  15. A boat goes 6 km an hour in still water, but takes thrice as much time...

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  16. A boat takes 60% more time to cover a certain distance in upstream tha...

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  17. A boat takes one fourth time in moving a certain distance downstream t...

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  20. The speed of boat in still water is 6 km/hr more than the speed of cur...

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