alleryએક હોડી શાંત પાણીમાં 12 km/h ની ઝડપે ચાલે છે અને પ્રવાહ 3 km/h ની ઝડપે વહે છે. પ્રવાહની દિશામાં તેની ઝડપ કેટલી હશે?
A9 km/h
B15 km/h
C18 km/h
D12 km/h
Answer & Solution
Correct answer: B. 15 km/h
પ્રવાહની દિશામાં પ્રવાહ મદદરૂપ બને છે, 12 + 3 = 15 km/h.
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