# 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

 171. Ratio of the speed of upstream speed to downstream is 3:15. If the speed of boat in still water is 45 km/hr. Then find the distance covered in upstream in 7 hours in (km)?धारा के प्रतिकूल गति से धारा के अनुकूल गति का अनुपात 3:15 है। यदि स्थिर जल में नाव की गति 45 किमी/घंटा है। तो धारा के प्रतिकूल 7 घंटे में तय की गई दूरी (किमी में) ज्ञात कीजिये?A. 125 kmB. 105 kmC. 420 kmD. 145 kmE. 250 km Option “B” is correct.Ratio of the speed of upstream to downstream = 3:15Speed of boat in still water = (Us+Ds)/2=  (3x+15x)/2=18x/2= 9xSpeed of boat in still water =9x = 45 x = 5Required Distance = 7 * 3 * 5= 105 km 172. Time taken by the boat to cover 130 km in still water is the same as the time taken by the boat to cover 150 km in downstream and the time taken by the boat to cover 176 km in upstream is 8 hours. Find the downstream distance travelled by the boat in 15 hours.नाव को स्थिर जल में 130 किमी की दूरी तय करने में लिया गया समय, नाव द्वारा धारा के अनुकूल 150 किमी की दूरी तय करने में लिए गए समय के समान है और नाव द्वारा धारा के प्रतिकूल 176 किमी की दूरी तय करने में लिया गया समय 8 घंटे है। नाव द्वारा 15 घंटे में धारा के अनुकूल तय की गई दूरी ज्ञात कीजिए।A. 600 kmB. 450 kmC. 540 kmD. 360 kmE. None of these Option “B” is correct.Let the speed of the boat in still water be B km/hr and the speed of the current be C km/hr.130/B = 150/(B + C)130B + 130C = 150B120B = 130CB/C = 13/2B = 13xC = 2x176/(13x – 2x) = 8176/9x = 8x = 2 km/hrDownstream speed of the boat = 13 * 2 + 2 * 2 = 26 + 4 = 30 km/hrRequired distance = 30 * 15 = 450 km 173. The total time taken by the boat to cover 120 km downstream and d km upstream is 9 hours and the ratio of the speed of the boat in still water to stream is 5:1. If the boat covers 100 km in still water in 4 hours, then find the value of d?नाव द्वारा धारा के अनुकूल 120 किमी और धारा के प्रतिकूल d किमी की दूरी तय करने में लिया गया कुल समय 9 घंटे है और स्थिर जल में नाव से धारा की गति का अनुपात 5:1 है। यदि नाव स्थिर जल में 100 किमी की दूरी 4 घंटे में तय करती है, तो d का मान ज्ञात कीजिए।A. 80B. 100C. 90D. 150E. None of theseOption “B” is correct.The speed of the boat in still water = 100/4 = 25 km/hrThe speed of the stream = 25 * 1/5 = 5 km/hr120/(25 + 5) + d/(25 – 5) = 9120/30 + d/20 = 94 + d/20 = 9                                                     d/20 = 5d = 100 174. The total time taken by the boat to cover 240 km in downstream and x km in upstream is 18 hours and the boat covers x km in still water in 7.5 hours and the speed of the current is 1/4th of the speed of the boat in still water. Find the distance covered by the boat in upstream.नाव द्वारा धारा के अनुकूल 240 किमी और धारा के प्रतिकूल x किमी की दूरी तय करने में कुल 18 घंटे का समय लगता है और नाव स्थिर जल में x किमी की दूरी 7.5 घंटे में तय करती है और धारा की गति स्थिर जल में नाव की गति का 1/4 है। नाव द्वारा धारा के प्रतिकूल तय की गई दूरी ज्ञात कीजिए।A. 120 kmB. 150 kmC. 100 kmD. 180 kmE. None of theseOption “D” is correct.Let the speed of the boat in still water be B km/hr and the speed of the current be C km/hr.B = x/7.5C = x/7.5 * 1/4 = x/30Downstream speed of the boat = x/7.5 + x/30 = (4x + x)/30 = 5x/30 = x/6Upstream speed of the boat = (x/7.5 – x/30) = (4x – 3x)/30 = 3x/30 = x/10240/(x/6) + x/(x/10) = 181440/x + 10 = 181440/x = 8x = 180 km 175. The speed of the boat in still water is 56 km/hr. If the speed of the river is 14.28% of the speed of the boat and the boat takes 2 hours more in upstream than in downstream for the same distance and then find the total distance travelled by boat?स्थिर जल में नाव की गति 56 किमी/घंटा है। यदि नदी की गति नाव की गति का 14.28% है और नाव धारा के प्रतिकूल समान दूरी के लिए धारा के अनुकूल की तुलना में 2 घंटे अधिक लेती है तो फिर नाव द्वारा तय की गई कुल दूरी ज्ञात करें?A. 576 kmB. 364 kmC. 768 kmD. 640 kmE. None of theseOption “C” is correct.The speed of the boat=56 km/hrThe speed of the river=56*14.28/100=56*1/7=8 km/hrUpstream speed of the boat=56+8=64 km/hrDownstream speed of the boat=56-8=48 km/hrThe distance travelled by boat=xx/48-x/64=28x-6x=7682x=768x=384The total distance travelled by boat=Upstream + Downstream=384+384=768 km 176. A boat has a speed of 8 km/hr in still water. How much distance the boat could cover in 40 mins in downstream if it covers 2 km upstream in 40 minutes?स्थिर जल में एक नाव की गति 8 किमी/घंटा है। नाव धारा के अनुकूल 40 मिनट में कितनी दूरी तय कर सकती है यदि वह धारा के प्रतिकूल 2 किमी 40 मिनट में तय करती है?A. 7.86kmB. 8.86kmC. 8.66kmD. 7.66kmE. None of theseOption “C” is correct.Let u be speed of boat in still water, a be speed of boat in downstream and b be speed of boat in upstreamspeed of boat in upstream, b = distance / time = 2 / (40/60) = 3 km/hrspeed of boat in still water, u = (a + b) / 2 = 8a + b = 16a = 16 – 3 = 13Required distance = 13 * 40/60 = 26 /3 = 8.66 Km 177. The speed of the stream is 8 kmph. If the time taken by the boat travels 240 km upstream and downstream is 40 hours, then what is the difference between the time taken by upstream covers 84 km and downstream covers 180 km?धारा की गति 8 किमी प्रति घंटा है। यदि नाव द्वारा धारा के प्रतिकूल और धारा के अनुकूल 240 किमी की यात्रा करने में लिया गया समय 40 घंटे है, तो धारा के प्रतिकूल 84 किमी और धारा के अनुकूल में 180 किमी की दूरी तय करने में लगने वाले समय में कितना अंतर है?A. 3B. 4C. 5D. 6E. None of theseOption “A” is correct.Stream speed = 8 kmph240/(8 + x) + 240/(x – 8) = 406 * (x – 8 + 8 + x) = x2 – 6412x = x2 – 64 = > x2 – 12x – 64 = 0 = > (x – 16) (x + 4) = 0x = 16 kmphUpstream speed = 16 – 8 = 8 kmphDownstream speed = 16 + 8 = 24 kmphRequired Time = 84/8 – 180/24 = 10.5 – 7.5 = 3 hours 178. The speed of a boat in upstream and downstream is 14km/hr and 22km/hr respectively. The time taken by the boat to cover a distance of (4d + 8) km in still water is 4 hours. Find the value of d in km?एक नाव की धारा के प्रतिकूल और धारा के अनुकूल गति क्रमशः 14 किमी/घंटा और 22 किमी/घंटा है। नाव द्वारा स्थिर जल में (4d + 8) किमी की दूरी तय करने में लिया गया समय 4 घंटे है। किमी में, d का मान ज्ञात कीजिए?A. 15 kmB. 10 kmC. 16 kmD. 25 km E. None of theseOption “C” is correct.Speed of boat in still water = (14+22)/2 = 36/2 = 18 kmph4d+8 = 4*184d+8 = 724d=64d= 16km 179. The boat covers 350 km downstream in 7 hours and the boat covers 140 km in still water in 4 hours. If the boat covers d km downstream and (d-80) km upstream in 10 hours, then find the value of d?नाव धारा के अनुकूल 350 किमी की दूरी 7 घंटे में तय करती है और नाव स्थिर जल में 140 किमी की दूरी 4 घंटे में तय करती है| यदि नाव d किमी धारा के अनुकूल और (d-80) किमी धारा के प्रतिकूल 10 घंटे में तय करती है, तो d का मान ज्ञात कीजिए?A. 180B. 320C. 140D. 200E. None of theseOption “D” is correct.The downstream speed of the boat = 350/7 = 50 km/hrThe speed of the boat in still water = 140/4 = 35 km/hrThe speed of the stream = 50 – 35 = 15 km/hrThe upstream speed of the boat = 35 – 15 = 20 km/hrd/50 + (d – 80)/20 = 102d + 5 * (d – 80) = 10 * 1002d + 5d – 400 = 1000d = 1400/7d = 200 180. The ratio of speed of stream and upstream is 2: 15, if the speed of the boat is 34 kmph in still water, find the distance in downstream in 90 min.धारा की गति और उर्ध्वप्रवाह की गति का अनुपात 2: 15 है, अगर नाव की गति शांत जल में 34 किमी प्रति घंटा है, तो 90 मिनट में तय की गयी अनुप्रवाह की दूरी ज्ञात करें।A. 38 kmB. 57 kmC. 76 kmD. 95 kmE. None of theseOption “B” is correct.The ratio of speed of stream and upstream = 2: 15 (2x, 15x)Speed of the boat = 15x + 2x = 17x=> 17x = 34=> x = 2The downstream speed = 2 * 2 + 17 * 2 = 38Required distance = 38 * (90/60) = 57 km