Question

A sailor can row a boat 8 km downstream and return back to the
starting point in 1 hour 40 minutes. If the speed of the stream is
2 km/hr, find the speed of the boat in still water.
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Answer 1

Answer:

Refer to the above attachment :)

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Answer 2

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Heat is the form of energy that is transferred between systems or objects with different temperatures (flowing from the high-temperature system to the low-temperature system). Also referred to as heat energy or thermal energy.

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