Speed Of The Boat In Still Water Is 8 Kilometers Per Hour Tab

Speed of the boat in still water = 4 (8+ 6)/ (8 � 6) = 4 * 14/2 = 28 km/hr. Average Speed-based question: As the name Speed Of The Boat In Still Water Is 8 Kilometers Per Hour Tab Speed Of The Boat In Still Water Is 8 Kilometers Per Hour Tab tells, we need to calculate the average speed of the boat while you are upstream and downstream speed. You can calculate average speed as follows, Average Speed = (upstream speed * downstream speed)/ Boat�s speed in still water. The speed of a boat in still water is 8 km/hr It can go 15 km upstream and 22 km downstream in 5 hours. The speed of the stream is km/hr. Medium. join our group for asking your maths doubt pls click below link myboat333 boatplans The question is about relative myboat333 boatplansamDistance 1 (D1) = 5 kmTime (T) = 3 hoursRelative Velocity 1 (Vr1) = (V - Vs {Velocity of stream})Time = 3 hours . Let the speed of Speed Of The Boat In Still Water Is 8 Kilometers Per Hour Tab stream=x km/h. Thus boat's speed upstream =(8-x)km/h and downstream =(8+x)km/h As it goes 20km upstream, time taken in going upstream =20/(8-x) hrs. Similarly, time taken in going 22 km downstream =22/(8+x) Therefore total traveling time ={20/(8-x)+22/(8+x) hrs. But, according to question, 20/(8-x) ? 22/(8+x) =6 =>20(8+x) + 22(8-x) =6(8^2 - x^2) => - 2x = 6?64 - 6(x^2) =>6(x^2) - 2x - 48 =0 =>3(x^2) - x - 24 =0 =>3(x^2) -. 9x +8x =0 =>3x(x - 3) +8(x - 3)=0 =>(3x+8)(x-3)=0 Speed Of The Boat In Still Water Is 8 Kilometers Per Hour Tab =>x=3 or -8/3 We consider the positive value of speed in this case(why?. ? Speed of the boat in still Speed Of The Boat In Still Water Is 8 Kilometers Per Hour Tab water is 8km/hr. ? The speed of the boat in upstream is 8?xkm/hr. ? The speed of the boat in downstream is 8+xkm/hr. ? The time taken by the boat to cover 15km=8?x15 hr. ? The time taken by the boat to cover 22km=8+x22 hr. According to the question, ? 8?x15 +8+x22 =5. ? 15(8+x)+22(8?x)=5(8?x)(8+x). ? +15x+?22x=5(64?x2). ? ?7x=?5x2. ? 5x2?7x?24=0.� A passenger train takes one hour less for a journey of km if Speed Of The Boat In Still Water Is 8 Kilometers Per Hour Tab its speed is increased by Speed Of The Boat In Still Water Speed Of The Boat In Still Water Formula Year Is 8 Kilometers Per Hour Tab 5 km/hr from its usual speed. The usual speed of the train iskm/hr. Medium. View solution. The speed of a boat in still water is 8 km/hr It can go 15 km upstream and 22 km downstream in 5 hours. The speed of the Speed Of The Boat In Still Water Is 8 Kilometers Per Hour Tab stream is km/hr. Medium.

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