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upstream speed of boat = supstream = v - c. downstream speed of boat = sdownstream = The Speed Of The Boat Upstream Touch v + c. Upstream data: d = 70 miles, t = hours. supstream = 70 miles/ hours = 70/ (miles/hr) = miles/hr. Downstream data: d = 70 miles, t = 5 hours. sdownstream = 70 miles/5 hours = 10/5 (miles/hr) = 14 miles/hr. a). With this, we arrive at the following equations for the upstream and downstream speeds of the boat: supstream: v - c = sdownstream: v + c = b).� So we can see that our result for speeed of boat in stiil water (v = mph) is the same using either equation from part (a) and plugging in our answer for c (speed of current) obtained in part (b), which is what we would expect. I trust the above will prove helpful to your understanding of this problem. If the speed of the current is 3 km/h throughout, find the speed of the boat in still water, giving your answer correct to 3 significant figures. See answer. sereyneathmoeupbsdil is waiting for your help.� Step-by-step explanation: Let time travelling upstream be t1 hours and downstream = t2 hours. t1 + t2 = (1). Let v be the speed of the boat in still water. 12 / t1 = v - 3.(2). 12 / t2 = v + 3.(3). From (1) and (3), substituting for t2: 12 / ( - t1) = v + 3.(4). Subtract: (2) - (4): 12 / t1 - 12 / ( - t1) = 12( - t1) - 12t1 = -6t1( - t1). 21 - 12t1 - 12t1 = t1 Speed Of The Boat In Upstream Upgrade + 6t^2. 6t1^2 + t1 - 21 = 0. Solving this gives t1 = hours. Therefore the speed in still water (v) = 12/ + 3 = to 3 sig figs. New questions in Mathematics. Quote: A boat travelled upstream a distance Speed Of The Boat Upstream And Downstream List of 90 miles at an average speed of (v-3) miles per hour and then travelled downstream at an average speed of (V+3) miles per hour. If the trip upstream took half an hour longer than the trip downstream, how many hours did it take the boat to travel downstream? A) b) C) D) e) � If the trip upstream took a half hour longer than the trip downstream, then how many hours did it take the boat to travel downstream?.

Sign in ui-button ui-button. Add Bookmark. No comments available. A circular copper wire of radius 7cm is bent to form a rectangle. If the breadth and the length of a rectangle are in the ratio of 4 : 7 respectively, what is the breadth of the rectangle? A started a business by investing Rs. At the end of 4 months from the start of the business, C joined them with an investment of Rs.

At the end of 10 months from the start of the business, A withdrew Rs. The sum of two Speed Of The Boat Upstream And Downstream Mod positive numbers is Mathew scored 42 marks in biology, 51 marks in chemistry, 58 marks in mathematics, 35 marks in physics and 48 marks in English.

The maximum marks a student can score in each subject are How much overall percentage did Mathew get in this exam? None of these -- View Answer 5. Bus fare between Raipur and Mirpur for one adult is six times the fare for one child. If an adult's bus fare is Rs. None of these -- View Answer. General Knowledge. General Science. General English.

General Computer Science. General Intellingence and Reasoning. Current Affairs. Elementary Mathematics. English Literature. Login to Bookmark. Previous Question. Next Question. Report Error. Add Bookmark View My Bookmarks. A truck covers a distance of km at a certain speed in 8 hours.

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