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 ബോട്ടിന്റെ വേഗത മണിക്കൂറിൽ 12 കി.മീ. ആണ്. 'A', 'B' എന്നീ രണ്ട് പോയിന്റുകൾക്കിടയിൽ, ബോട്ടിന് മുകളിലേക്ക് പോകാൻ 6 മണിക്കൂറും, താഴേക്ക് 4 മണിക്കൂർ സമയവും എടുക്കും. നദിയിലെ ഒഴുക്കിന്റെ വേഗത എത്രയാണ് ?
Speed of a speed-boat when moving in the direction parallel to the direction of the current is 16 km/hr. Speed of the current is 3 km/hr. So the speed of the boat against the current will be (in km/hr)