alleryस्थिर-उदकाची गती 15 किमी/तास आशिल्ली बोट 40 किमी सकयल वचून परत येता, ताचो प्रवाह 5 किमी/तास आसता. एकूण वेळ?
A8 तास
B7 तास
C5 तास
D6 तास
Answer & Solution
Correct answer: D. 6 तास
सकयल्या प्रवाहांतल्या 40 / 20 = 2 h आनी अपस्ट्रीम 40 / 10 = 4 h, वट्ट 6 तास.
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