alleryदोन नळयो 20 आनी 30 वरांनी टांकयेक भरतात आनी तिसरी नळ 60 वरांनी ती रिती करता. सगळें उक्तें, तें भरता
A15 तास
B18 तास
C10 तास
D12 तास
Answer & Solution
Correct answer: A. 15 तास
निव्वळ दर 3/60 + 2/60 - 1/60 = 4/60 = 1/15 दर वराक, म्हणून 15 तास.
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