# 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

 181. Time taken by the boat to cover 160 km in still water is the same as the time taken by the boat to cover 192 km in downstream and the time taken by the boat to cover 240 km in upstream is 15 hours. Find the speed of the boat in still water.नाव को स्थिर जल में 160 किमी की दूरी तय करने में लिया गया समय, नाव द्वारा धारा के अनुकूल 192 किमी की दूरी तय करने में लिए गए समय के समान है और नाव द्वारा धारा के प्रतिकूल 240 किमी की दूरी तय करने में लिया गया समय 15 घंटे है। स्थिर जल में नाव की गति ज्ञात कीजिए।A. 16 km/hrB. 20 km/hrC. 24 km/hrD. 30 km/hrE. 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.160/B = 192/(B + C)(B + C)/B = 192/160(B + C)/B = 6/5 5B + 5C = 6BB = 5C —- (1)240/(B – C) = 15B – C = 16 —- (2)From (1) and (2), 5C – C = 164C = 16C = 4 km/hrB = 5 * 4 = 20 km/hr 182. Upstream speed of a boat is 4Km/h less than its downstream speed and speed of the boat in still water is 12 Km/h. Time taken by the boat to go 210 Km downstream is what percent of the time taken by the boat to go 120 Km upstream?एक नाव की उर्ध्वप्रवाह गति इसकी अनुप्रवाह गति से 4 किमी/घंटा कम है और शांत पानी में नाव की गति 12 किमी/घंटा है। 210 किलोमीटर अनुप्रवाह जाने के लिए नाव द्वारा लिया गया समय 120 किलोमीटर उर्ध्वप्रवाह जाने के लिए नाव द्वारा लिया गया समय कितना प्रतिशत है?A. 125%B. 110%C. 120%D. 105%E. None of theseOption “A” is correct.Let, speed of the boat in still water = a Km/hAnd speed of the stream = b Km/h(a + b) – (a – b) = 4=> a + b – a + b = 4=> 2b = 4=> b = 4/2=> b = 2 Km/ha = 12 Km/hTime taken by the boat to go 210 Km downstream = 210/(12 + 2)= 210/14= 15 hoursTime taken by the boat to go 120 Km upstream = 120/(12 – 2)= 120/10= 12 hoursRequired percentage = 15/12 x 100 = 125% 183. Total time taken by a boat to go 48 km in downstream and 54 km in upstream is 13 hours. Speed of the current is 6 kmph less than the speed of boat in still water. What is the time taken by the boat to cover 90 km in still water? (in hours)एक नाव को अनुप्रवाह 48 किमी और ऊर्ध्वप्रवाह 54 किमी जाने में कुल 13 घंटे लगते हैं। स्थिर पानी में धारा की गति, स्थिर पानी में नाव की गति से 6 किमी प्रति घंटा कम है। नाव को स्थिर पानी में 90 किमी की दूरी तय करने में कितना समय लगता है? (घंटों में)A. 12B. 15C. 6D. 9E. 10Option “E” is correct.Let the speed of current be x kmph.Then the speed of boat in still water = x + 6 kmphATQ, 48 / (x + 6 + x) + 54/6 = 13x = 3Required time taken = 90 / (6 + 3 ) = 10 hours 184. Time taken by the boat to cover x km in downstream is 20 hours and the time taken by the boat to cover (x – 10) km in upstream is 25 hours. If the time taken by the boat to cover 320 km in still water is 20 hours, then find the speed of the current?नाव द्वारा धारा के अनुकूल x किमी की दूरी तय करने में 20 घंटे का समय लगता है और नाव द्वारा धारा के प्रतिकूल (x – 10) किमी की दूरी तय करने में 25 घंटे का समय लगता है। यदि नाव को स्थिर जल में 320 किमी की दूरी तय करने में 20 घंटे का समय लगता है, तो धारा की गति ज्ञात कीजिए?A. 2 km/hrB. 5 km/hrC. 3 km/hrD. 6 km/hrE. None of theseOption “A” is correct.Let the speed of the boat in still water be B km/hr and the speed of the current be C km/hrB = 320/20 = 16 km/hr(16 + C) * 20 – (16 – C) * 25 = 10320 + 20C – 400 + 25C = 1045C = 90C = 2 km/hr 185. Time taken by the boat to cover 330 km in downstream is 5 hours more than the time taken by the boat to cover 220 km in downstream. If the speed of the current is 4 km/hr, then find the upstream speed of the boat?नाव द्वारा धारा के अनुकूल 330 किमी की दूरी तय करने में लिया गया समय, नाव द्वारा धारा के अनुकूल 220 किमी की दूरी तय करने में लगे समय से 5 घंटे अधिक है। यदि धारा की गति 4 किमी/घंटा है, तो नाव की धारा के प्रतिकूल गति ज्ञात कीजिए?A. 16 km/hrB. 14 km/hrC. 18 km/hrD. 20 km/hrE. None of theseOption “B” is correct.330/(B + 4) = (220/(B + 4)) + 5330 = 220 + 5B + 205B = 90B = 18 km/hrUpstream speed of the boat = 18 – 4 = 14 km/hr 186. Time taken by the boat to cover 320 km in upstream is 6 hours more than the time taken by the boat to cover 160 km in downstream and the speed of the current is 1/9 of the speed of the boat in still water. Find the time taken by the boat to cover 180 km in still water.नाव द्वारा धारा के प्रतिकूल 320 किमी की दूरी तय करने में लिया गया समय, धारा के अनुकूल 160 किमी की दूरी तय करने में नाव द्वारा लिए गए समय से 6 घंटे अधिक है और धारा की गति स्थिर जल में नाव की गति का 1/9 है। स्थिर जल में 180 किमी की दूरी तय करने में नाव द्वारा लिया गया समय ज्ञात कीजिए।A. 8 hoursB. 10 hoursC. 5 hoursD. 2.5 hoursE. None of theseOption “C” is correct.Speed of Boat in still water = 9x km/hrSpeed of the current = x km/hr320/(9x – x) – 160/(9x + x) = 640/x – 16/x = 624 = 6xx = 4 km/hrSpeed of Boat in still water = 9 * 4 = 36 km/hrTime taken = 180/36 = 5 hours 187. Time taken by the boat to cover 280 km downstream is 4 hours more than the time taken by the boat to cover 120 km upstream and the ratio of the downstream speed of the boat to the speed of the boat in still water is 7:6. Find the speed of the current.नाव द्वारा धारा के अनुकूल 280 किमी की दूरी तय करने में लिया गया समय, धारा के प्रतिकूल 120 किमी की दूरी तय करने में नाव द्वारा लिए गए समय से 4 घंटे अधिक है और नाव की धारा के अनुकूल गति से स्थिर जल में नाव की गति का अनुपात 7:6 है। धारा की गति ज्ञात कीजिए।A. 5 km/hrB. 2 km/hrC. 6 km/hrD. 4 km/hrE. None of theseOption “D” is correct.Let the speed of boat in still water be B km/hrLet the speed of the current be C km/hr(B + C)/B = 7/6B + C = 7xB = 6xC = 7x – 6x = x280/7x – 120/(6x – x) = 440/x – 120/5x = 440/x – 24/x = 416/x = 4x = 4 km/hr 188. Time taken by the boat to cover 132 km in downstream is equal to the time by the boat to cover 84 km in upstream and the speed of the stream is 4 km/hr. Find the speed of the boat in still water?नाव द्वारा धारा के अनुकूल 132 किमी की दूरी तय करने में लिया गया समय, नाव द्वारा धारा के प्रतिकूल 84 किमी की दूरी तय करने में लिए गए समय के बराबर है और धारा की गति 4 किमी/घंटा है। स्थिर जल में नाव की गति ज्ञात कीजिये?A. 12 km/hrB. 14 km/hrC. 16 km/hrD. 18 km/hrE. None of theseOption “D” is correct.Let the speed of the boat in still water be B km/hr.132/(B + 4) = 84/(B – 4)11/(B + 4) = 7/(B – 4)11B – 44 = 7B + 284B = 72B = 18 km/hr 189. The total time taken by the boat to cover 240 km in downstream and 180 km still water is 19 hours and the ratio of the downstream speed of the boat to the speed of the boat in still water is 6:5. Find the speed of the current?नाव द्वारा धारा के अनुकूल 240 किमी और स्थिर जल में 180 किमी की दूरी तय करने में लिया गया कुल समय 19 घंटे है और नाव की धारा के अनुकूल गति से स्थिर जल में नाव की गति का अनुपात 6:5 है। धारा की गति ज्ञात कीजिये ?A. 4 km/hrB. 6 km/hrC. 5 km/hrD. 3 km/hrE. None of theseOption “A” 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 + C = 6xB = 5x240/6x + 180/5x = 1940/x + 36/x = 1976/x = 19x = 4 km/hrSpeed of the current = 6 * 4 – 5 * 4 = 24 – 20 = 4 km/hr 190. The time taken by the boat to travel upstream distance of (D+120) km is double the time taken by the boat to travel downstream distance D km. If the ratio of the speed of the boat and current is 5:1, then find the value of D?नाव द्वारा धारा के प्रतिकूल (D+120) किमी की दूरी तय करने में लिया गया समय, धारा के अनुकूल दूरी D किमी की यात्रा करने में नाव द्वारा लिए गए समय का दोगुना है। यदि नाव और धारा की गति का अनुपात 5:1 है, तो D का मान ज्ञात कीजिए।A. 480B. 250C. 360D. 160E. None of theseOption “C” is correct.Total distance traveled downstream=D kmTotal distance traveled upstream=D+120 km2D/(5x+x)=(D+120)/(5x-x)2D/6x=(D+120)/4x4D=3D+360D=360