alleryरवी एकटा एक खंदक 10 दिवसांत खणतो आणि सुनील एकटा 15 दिवसांत खणतो. दोघांना मिळून लागतील
A8 दिवस
B6 दिवस
C5 दिवस
D7 दिवस
Answer & Solution
Correct answer: B. 6 दिवस
दोघे मिळून दररोज खंदकाचा 1/10 + 1/15 = 5/30 = 1/6 भाग खणतात, म्हणून 6 दिवस लागतील.
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