If a boat goes downstream 72 miles in 3 hours and upstream 60 miles in 6 hours, the rate of the river and the rate of the boat in still water respectively are?: Let s = speed of the boat, & c = current Speed upstream = (s-c) Speed downstream = (s+c): Two unknowns, two distance equation, Dist = time * speed: 3(s + c) = 72 Simplify divide equation by 3. Jun 12, �� Stream � The moving water in a river is called a stream. Upstream Time Based Questions � The time taken by a boat to travel upstream or downstream may be asked with the speed of a boat in still water and speed of the stream given in the question; Downstream = (1/10 ? 60) = 6 km/hr. Upstream = 2 km/hr. Speed in still water = ? (6+2. A boat travels upstream for 60 miles in 3 hours and returns in 2 hours traveling downstream in a river. What is the rate of the boat in still water and the rate of the current?
If the river is running at 2Km/h, it takes 2 hours more in upstream than to go downstream for the distance. How far is the place? A boat sails 15 km of a river towards upstream in 5 hours. How long will it take to cover the same distance downstream, if the speed of current is one-fourth the speed of the boat in still water? A boat running downstream covers a distance of 40km in 4hrs and covering the same distance upstream in 8hrs. Populations in upstream versus downstream river locations can be exposed to vastly different environmental and ecological conditions and can thus harbor different genetic resources due to selection and neutral processes. An interesting question is how upstream�downstream directionality in rivers affects the evolution of immune response genes. We used next-generation amplicon sequencing to identify eight alleles of the major histocompatibility complex (MHC) class II ? exon 2 in the cyprinid longnose dace (Rhinichthys cataractae) from three rivers in Alberta, upstream and downstream of municipal. The river flows halfway down the water, and it has slowed down. It's now a rapid river, where water moves quickly. A man jumping into the waters might be caught up in its currents, and dragged below the surface. If he survives, he'll have to beware of the cliff, where the river is headed. It's a roaring waterfall, and heart-stopping drop, twenty meters high, or more. Those who know the river are careful.� Downstream. The water falls down, down, down, a height of twenty meters. It ends in a big, frothy splash, in the water. Any person falling down the waterfall would get churned and turned around in the water for a few times. Those who survive will be able to swim, slowly, to the riverside. The river starts Speed Upstream And Downstream 12 again. It flows, slowly, and in an ever-widening swathe, to the sea.
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