alleryA एक काम 15 दिवसांत आणि B 10 दिवसांत करू शकतो. A एकटा 5 दिवस काम करतो, नंतर B सामील होतो. B ने A सोबत काम केले:
A4 दिवस
B6 दिवस
C3 दिवस
D5 दिवस
Answer & Solution
Correct answer: A. 4 दिवस
A एकट्याने 5/15 = 1/3 काम करतो; उर्वरित 2/3 कामासाठी दररोज 1/6 या दराने 4 दिवस लागतात.
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