A river of width 200 m is flowing from west to east with a speed of 18 km/h. A boat, moving with speed of 36 k…

Question

A river of width **$$200 \, 	ext{m}$$** is flowing from west to east with a speed of **$$18 \, 	ext{km/h}$$**. A boat, moving with speed of **$$36 \, 	ext{km/h}$$** in still water, is made to travel one-round trip (bank to bank of the river). Minimum time taken by the boat for this journey and also the displacement along the river bank are _____ and _____ respectively.

Accepted Answer

D. **$$40 \, 	ext{s}$$** and **$$200 \, 	ext{m}$$**

Answer

A. **$$20 \, 	ext{s}$$** and **$$100 \, 	ext{m}$$**

Answer

B. **$$40 \, 	ext{s}$$** and **$$100 \, 	ext{m}$$**

Answer

C. **$$40 \, 	ext{s}$$** and **$$0 \, 	ext{m}$$**

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