In one hour , a boat goes 11 km/hr along the stream and 5 km/hr against the stream . The speed of the boat in still water ( in km/hr) is :

A3 km/hr

B5 km/hr

C8 km/hr

D9 km/hr

Answer:

C. 8 km/hr

Read Explanation:

ബോട്ടിന്റെ വേഗത + നദിയുടെ വേഗത = 11 km/hr ----------------(1) ബോട്ടിന്റെ വേഗത - നദിയുടെ വേഗത = 5 km/hr -------------------(2) (1) + (2) ചെയ്‌താൽ 2 x ബോട്ടിന്റെ വേഗത = 16 km/hr ബോട്ടിന്റെ വേഗത = 8 km/hr നദിയുടെ വേഗത = 11 km/hr - ബോട്ടിന്റെ വേഗത = 11 km/hr - 8 km/hr = 3 km/hr ചോദിച്ചിരിക്കുന്നത് നിശ്ചല ജലത്തിലെ ബോട്ടിന്റെ വേഗത = 8 km/hr

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In one hour , a boat goes 11 km/hr along the stream and 5 km/hr against the stream . The speed of the boat in still water ( in km/hr) is :

C. 8 km/hr

Read Explanation:

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