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Abhi rows upstream a distance of 28 km i...

Abhi rows upstream a distance of 28 km in 4 hours and rows downstream a distance of 50 km in 2 hours. To row a distance of 44.8 km in still water, he will take : /
अभि धारा के प्रतिकूल 28 किमी 4 घंटे में जाता है तथा धारा के अनुकूल 50 किमी 2 घंटे में तय करता है | स्थिर जल में 44.8 किमी की दूरी तय करने में, उसे कितना समय लगेगा ?

A

2.8 h

B

3.2 h

C

2.4 h

D

2.2 h

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The correct Answer is:
A
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A boat takes 80 minutes to 12 km upstream and 60 minutes to row 15 km downstream. How long will it take to row a distance of 36 km in still water? किसी नाव को धारा के प्रतिकूल 12 किमी जाने में 80 मिनट लगते हैं तथा धारा के अनुकूल 15 किमी जाने में 60 मिनट लगते हैं | स्थिर जल में इसे 36 किमी की दूरी तय करने में कितना समय लगेगा ?

A boat goes a distance of 4 km upstream in 2 hours and the same distance downstream in 20 minutes. How long will it take to go 10 1/2 km in still water? एक नाव 2 घंटे में 4 किमी धारा के प्रतिकूल जाती है और धारा के अनुकूल इतनी ही दूरी 20 मिनट में तय करती है | स्थिर जल में 10 1/2 किमी तक जाने में इसे कितना समय लगेगा ?

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A boat covered a distance of 15 km upstream in 5 hours and a distance of 42 km downstream in 6 hours. The speed of the stream in km/h is: एक नाव धारा के विपरीत 15 किमी की दूरी 5 घंटे में और धारा के साथ 42 किमी, 6 घंटे में दुरी तय किया। किमी / घंटा में धारा की गति है:

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 ?

The time taken by a boat to travel 13 km downstream is the same as time taken by it to travel 7km upstream. If the speed of the stream is 3km/h, then how much time(in hours) will it take to travel a distance of 44.8 km in still water? / धारा के अनुकूल 13 किमी की दूरी तय करने में एक नाव को लगने वाला समय धारा के प्रतिकूल 7 किमी की दूरी तय करने में इसे लगने वाले समय के बराबर है | यदि धारा की चाल 3 किमी/घंटा है, तो स्थिर जल में इसे 44.8 किमी की दूरी तय करने में कितना समय ( घंटे में ) लगेगा ?

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