alleryमीना एक कुंपण 18 दिवसांत रंगवू शकते आणि गीता 9 दिवसांत रंगवू शकते. जर त्या दोघींनी एकत्र काम केले, तर ते कुंपण पूर्ण होईल
A5 दिवस
B6 दिवस
C7 दिवस
D8 दिवस
Answer & Solution
Correct answer: B. 6 दिवस
दोघी मिळून दररोज कुंपणाचा 1/18 + 1/9 = 3/18 = 1/6 भाग रंगवतात, म्हणून 6 दिवस लागतील.
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