In one hour, a boat goes 13 km/hr in the direction of the stream and 7 km/hr against the direction of the stream. What will be the speed of the boat in still water?
A8 km/hr
B10 km/hr
C14 km/hr
D6 km/hr
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നിശ്ചല ജലത്തിൽ ഒരു ബോട്ടിൻ്റെ വേഗം മണിക്കൂറിൽ 8 കി.മീറ്ററും ഒഴുക്കു വെള്ളത്തിന്റെ വേഗം മണിക്കൂറിൽ 2 കി.മീറ്ററും ആയാൽ ഒഴു ക്കിന് എതിരായി ബോട്ടിൻ്റെ വേഗത എന്ത്?
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