If a boat Math Upstream Downstream Problems Quota or a swimmer moves in upstream downstream river boat problems rating opposite direction of the stream then it is called upstream movement. In this case motion of boat or swimmer is opposed by the motion bozt stream. If a boat or a swimmer moves in the same direction of the stream then it is called downstream movement.

In this case motion of boat or swimmer is supported by the motion of stream. If Ratio of downstream and upstream downstream river boat problems rating speeds of a boat is a : b. If speed of the boat is double the speed of the stream, find the speed stream?

Find his average speed for the whole journey, if the river is flowing with a speed of 1. Find the distance. What would be the average speed of boat during the journey? Sign in. Log into your account.

Password recovery. Forgot uptream password? Get help. IBPS Guide. Downstream: If a boat or a swimmer moves in the same direction of the stream then it is called downstream movement. When speed of boat or a upstream downstream river boat problems rating is given then it normally means upstreqm in still water.

Concepts and formulas of boats and streams are also applicable to problems involving:. Cyclist and wind: Cyclist analogous to boat and wind analogous to stream.

Example : 1 A man can row a boat to a certain distanced upstream in 4 hours and takes 3 hours to row downstream the same distance. Type 3: 3 Pavi rows in still water with a speed of 4. Inline Feedbacks. View Comments. Load More Comments. Contact � [email protected].

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(Downstream speed + Upstream speed) = (B + S + B - S) = B Speed of river = (Downstream speed - Upstream speed) = ((B + S) � (B - S)) = (B + S � B + S) = S Formulae: Speed of boat or swimmer in still water = B, Speed of the stream = S, 1. Downstream Speed of Upstream Downstream Word Problems Yahoo boat or swimmer = (B + S) 2. U pstream Speed of boat or swimmer = (B - S) 3. Adding the two equations, we get 2b = d + u. ? b = (d+u) / 2 which gives the speed of the boat in terms of downstream and upstream speed. Subtracting the equation (i) and (ii), we get d � u = 2w ? w = (d-u) / 2 which gives the speed of the stream in terms of downstream and upstream speed.

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