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1.1. A motorboat going downstream overcame a raft at point A; T=60 minutes later it turned back and after some time passed the raft at a distance l=6.0 km from the point A. Find the flow velocity assuming the duty of the engine to be constant.

|------------------------------------------------------------------------------|<< Distance S, the entire length

A ---------------------B(where the two boats meet) ---------------C,( the farthest point the motor boat went)

|------------------------| << this is l which is 6km

B= boat

W=water, or raft

E=earth

When I write B/E i mean boat relative to the earth.

Tau is equal to 60 minutes.

http://mathbin.net/equations/8710_0.png [Broken]

|------------------------------------------------------------------------------|<< Distance S, the entire length

A ---------------------B(where the two boats meet) ---------------C,( the farthest point the motor boat went)

|------------------------| << this is l which is 6km

B= boat

W=water, or raft

E=earth

When I write B/E i mean boat relative to the earth.

Tau is equal to 60 minutes.

http://mathbin.net/equations/8710_0.png [Broken]

No matter how many times I manipulate the three equations up there, I do not get the answer which is 3 km/hour.No matter how many times I manipulate the three equations up there, I do not get the answer which is 3 km/hour.

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