ഒരു മണിക്കൂറിൽ ഒഴുക്കിനനുകൂലമായി 11 കിലോമീറ്ററും ഒഴുക്കിനെതിരെ 5 കിലോമീറ്ററും സഞ്ചരിക്കുന്ന ബോട്ട് നിശ്ചല ജലത്തിൽ എത്ര വേഗത്തിൽ സഞ്ചരിക്കും ?
A3 കി. മീ. /മണിക്കൂർ
B5 കി. മീ. /മണിക്കൂർ
C8 കി. മീ. /മണിക്കൂർ
D9 കി. മീ. /മണിക്കൂർ
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