Question

A river is flowing due east with a constant velocity 213km/h. The width of river is v3 km. A boat
starts from point A with a speed 3/2 km. The boatman rows the boat in such at way that it reaches point
B, 1 km east of A on the other bank as shown, then he must aim in a direction making an angle ( with
the north, where O is
(a) 30°
(b) 15°
(c) 45°
(d) 60°.
​

Answer 1

Answer:

a option is the answere

Answer 2

Answer:

a 30

Explanation:

Downstream/Upstream: ... And, the direction against the stream is called upstream. If the speed of a boat in still water is u km/hr and the speed of the stream is v km/hr, then: Speed downstream = (u + v) km/hr.

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