# Top 210 Most Asked Boat and Stream Questions [ 100% FREE ]

Navigating through competitive exams requires a clear understanding of various topics, one of which is boat and stream questions. The world of boats and streams is not just about boats moving on water; it’s about understanding the intricate dance between the boat and the water’s flow. And in the realm of competitive exams, this dance translates into boat and stream questions that challenge, intrigue, and test the understanding of aspirants.

One of the primary reasons behind the popularity of boat and stream questions in Government exams is their real-world applicability. Imagine a boat navigating the waters of a stream. The way it maneuvers against or along the stream can be mathematically modeled, and this forms the basis of boat and stream questions. Given their relevance, it’s no surprise that these questions often make an appearance in the quantitative aptitude section of various exams, carrying a weightage of 1-3 marks.

But before diving headlong into boat and stream questions, it’s vital to grasp the fundamental concepts associated with boats and streams. At the heart of these questions lies the boat and stream formula. This formula, crucial for solving boat and stream questions, breaks down the dynamics of boats in different water conditions. And for those eager to delve deep into the topic, our boat and stream formula pdf offers a detailed look into the mathematical intricacies of the concept.

Understanding boats and streams is about more than just formulas; it’s about visualizing various scenarios. Consider a boat moving against the flow of water. This is termed as ‘upstream’. The speed at which the boat moves in this scenario gives us the upstream speed. On the other hand, when the boat aligns with the water’s flow, moving with the current, it’s called ‘downstream’, and we measure its net speed as the downstream speed. And of course, there are times when waters are calm, and we’re dealing with ‘still water’ scenarios, where the water speed is zero.

For many aspirants, especially those who prefer reading in Hindi, we’ve curated boat and stream questions in Hindi. This ensures that everyone, regardless of their language preference, has equal access to this crucial topic. Moreover, our boat and stream questions pdf provides a handy compilation of these questions, making it easier for aspirants to practice and master the topic.

In conclusion, boat and stream questions are not just another topic; they are a doorway to understanding the beautiful interplay between motion and resistance, between man-made vessels and nature’s flow. Whether you’re seeking the boat and stream formula or practicing with our boats and streams problems, remember that each question brings you one step closer to mastering this vital topic for your exams.

## Top 210 Most Asked Boat and Stream Questions

 111. The upstream speed of the boat is 60% of the downstream speed of the boat. If the time taken by a boat traveling a distance of 225 km upstream is 2 hours more than that of downstream, then find the time taken by the boat traveling a distance of 180 km in still water?नाव की ऊर्ध्वप्रवाह गति, नाव की अनुप्रवाह गति का 60% है। यदि एक नाव द्वारा ऊर्ध्वप्रवाह 225 किमी की दूरी तय करने में लिया गया समय अनुप्रवाह तय करने में लिया गया समय से 2 घंटे अधिक है, तो शांत पानी में 180 किमी की दूरी तय करने वाली नाव द्वारा लिया गया समय ज्ञात कीजिए?A. 2 hoursB. 7 hoursC. 5 hoursD. 3 hoursE. None of these Option “D” is correct.The ratio of upstream and downstream speed of the boat=60:100=3:5The downstream speed of the boat =5XThe upstream speed of the boat =3X(225/3X)-(225/5X)=2 75/X-45/X=230=2XX=15The downstream speed of the boat=15*5=75 kmphThe upstream speed of the boat=15*3=45 kmph The speed of the boat in still water=(75+45)/2=60 kmphRequired time=180/60=3 hours 112. Upstream speed is 62.5% of the speed of the boat in still water. If the speed of the current is 25 kmph less than the speed of the boat in still water, then what is the distance covered by the boat along with stream in 7 hours?ऊर्ध्वप्रवाह गति, शांत जल में नाव की गति का 62.5% है। यदि धारा की गति, शांत जल में नाव की गति से 25 किमी प्रति घंटे कम है, तो 7 घंटे में नाव धारा के साथ कितनी दूरी तय करती है?A. 350 kmB. 399 kmC. 385 kmD. 420 kmE. 434 kmOption “C” is correct.Speed of boat = 8xSpeed of upstream = 8x * 62.5/100 = 5x8x-(8x-5x) = 25x = 5Speed of boat = 8 * 5 = 40 kmphSpeed of current = 8x – 5x = 3 * 5 = 15 kmphRequired distance = 7 * (15 + 40) = 385 km 113. The speed of a boat in downstream is 4/3 times the speed of the boat in upstream. The speed of the current is what percentage of the speed of the boat in still water?अनुप्रवाह में नाव की गति ऊर्ध्वप्रवाह में नाव की गति का 4/3 गुना है। धारा की गति स्थिर पानी में नाव की गति का कितना प्रतिशत है?A. 12%B. 14.28%C. 19%D. 27%E. None of theseOption “B” is correct.Let us take the speed of boat and speed of stream be x and y respectively.(x + y) = 4/3 * (x – y)=> y = x/7= > x/y = 7: 1Required percentage = 1/7 * 100 = 14.28% 114. Time taken by the boat in upstream is thrice of the time taken by it in downstream, but the distance covered by it in upstream is only 60% of the distance covered by it downstream. Find the ratio of the speed of the boat in still water to the speed of the current?नाव द्वारा ऊर्ध्वप्रवाह में लिया गया समय उसके अनुप्रवाह में लगने वाले समय का तीन गुना होता है, लेकिन ऊर्ध्वप्रवाह में उसके द्वारा तय की गई दूरी उसके अनुप्रवाह में तय की गई दूरी का केवल 60% होती है। स्थिर पानी में नाव की गति से धारा की गति का अनुपात ज्ञात कीजिये?A. 2:1B. 3:2C. 4:3D. 5:4E. 6:5Option “B” is correct.Speed of the boat = xSpeed of the stream = yDistance covered in downstream = d(d*60/100) / (x – y) = 3 * ( d / (x + y) )0.6/(x-y) = 3/(x+y)5x – 5y = x + y4x = 6yx/y = 3/2 115. The time taken by the boat to travel 360 km distance downstream is 60% of the time taken to travel the same distance upstream. If the speed of the stream is 5 kmph, then what is the speed of the boat in still water?नाव द्वारा 360 किमी की दूरी की अनुप्रवाह यात्रा करने में लगने वाला समय, उसी दूरी के उर्धव्प्र्वाह पर जाने के लिए लिए गए समय का 60% है। यदि धारा की गति 5 किमी प्रति घंटा है, तो शांत जल में नाव की गति क्या है?A. 10 kmphB. 12 kmphC. 15 kmphD. 20 kmphE. 18 kmphOption “D” is correct.Speed of the boat in still water=x360/(x + 5)=60/100 * (360/(x – 5))5/(x + 5)=3/(x – 5)3x + 15=5x – 252x=40X=20 kmph 116. A boat running upstream covers a distance of 65 km in 13 hours and for covering the same distance downstream it takes 5 hours. Find the speed of the stream is what percentage of the downstream speed?(aprrox.)एक नाव 13 घंटे में 65 किमी की ऊर्ध्वप्रवाह दूरी तय करती है और समान दूरी अनुप्रवाह में तय करने के लिए 5 घंटे लगते हैं। धारा की गति, अनुप्रवाह गति का कितना प्रतिशत है? (लगभग)A. 34%B. 31% C. 25%D. 28%E. None of theseOption “B” is correct.Upstream speed is = 65/13 = 5 km/hrDownstream speed is = 65/5 = 13 km/hrSo, the speed of the stream is = (13 – 5)/2= 8/2 = 4 km/hrThus, the required percentage is = 4/13 × 100 ≈ 31% 117. Ratio of speed of a boat in upstream to downstream is 1: 3. If the boat travels 24km in upstream and 48km in downstream in 2 hours, then the speed of stream is what percent of the speed of boat in still water?ऊर्ध्वप्रवाह तथा अनुप्रवाह में एक नाव की गति का अनुपात 1 : 3 है। यदि नाव 2 घंटे में 24 किमी ऊर्ध्वप्रवाह और 48 किमी अनुप्रवाह यात्रा करती है, तो धारा की गति, स्थिर पानी में नाव की गति का कितना प्रतिशत है?A. 50%B. 40%C. 30%D. 20%E. None of theseOption “A” is correct.US = x kmph and DS = 3x kmph24/x + 48/3x = 2=> x = 20US = 20 kmph and DS = 60kmphSpeed of boat in still water = (20 + 60)/2 = 40kmphSpeed of stream = (60 – 20)/2 = 20kmphRequired % = 20/40 * 100 = 50% 118. The speed of the stream is 33.33% of the speed of the boat in still water. If the total time taken by the boat to cover 240 km downstream and 150 km upstream in 9 hours, then find the time taken by the boat to cover 225 km in still water?धारा की गति स्थिर जल में नाव की गति का 33.33 प्रतिशत है। यदि नाव द्वारा धारा के अनुकूल 240 किमी और धारा के प्रतिकूल 150 किमी की दूरी 9 घंटे में तय की जाती है, तो स्थिर जल में नाव द्वारा 225 किमी की दूरी तय करने में कितना समय लगता है?A. 7 hoursB. 5 hoursC. 9 hoursD. 6 hoursE. None of theseOption “B” is correct.Let the speed of boat=3x km/hrAnd the speed of the stream=3x*1/3=x km/hr240/(3x+x)+150/(3x-x)=9240/4x+150/2x=960/x+75/x=9135/9=xx=15Speed of the boat=3*15=45 km/hrRequired time=225/45=5 hours 119. The ratio between speed of current to speed of boat in still water is 2: 5. The downstream speed is what percent of the upstream speed?शांत जल में धारा की गति से नाव की गति का अनुपात 2: 5 है। धारा-अनुकूल की गति, धारा-प्रतिकूल की गति का कितना प्रतिशत है?A. 166 (2/3) %B. 233 (1/3) %C. Cannot be determinedD. 133 (1/3) %E. 200 %Option “B” is correct.Speed of current = 2xSpeed of boat in still water = 5xTherefore Downstream speed = 7xUpstream speed = 3xRequired Percentage = (7x/3x)×100Required Percentage = 233 (1/3) % 120. The time taken by the boat to travel 360 km distance downstream is 60% of the time taken to travel the same distance upstream. If the speed of the stream is 5 kmph, then what is the speed of the boat in still water?नाव द्वारा 360 किमी की दूरी की अनुप्रवाह यात्रा करने में लगने वाला समय, उसी दूरी को उर्धव्प्रवाह तय करने के लिए लिए गए समय का 60% है। यदि धारा की गति 5 किमी प्रति घंटा है, तो शांत जल में नाव की गति क्या है?A. 10 kmphB. 12 kmphC. 15 kmphD. 20 kmphE. 18 kmphOption “D” is correct.Speed of the boat in still water=x360/(x + 5)=60/100 * (360/(x – 5))5/(x + 5)=3/(x – 5)3x + 15=5x – 252x=40       x=20 kmph