Speed of a boat in still water is 10 km/h and speed of stream is 2 km/h. path from starting line to finish line is downstream while path from finish line to starting line is upstream. If distance from starting line to finish line is 120 km, time taken for sailor to reach starting line back after covering distance till finish line should be

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Andy

Andy

What is the correct solution?

Andy

Andy

What is the correct solution?

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