alleryA ला एकट्या B पेक्षा 6 दिवस कमी लागतात, आणि एकत्र मिळून ते 4 दिवसांत काम पूर्ण करतात. एकट्या B ला लागणारा वेळ:
A8 दिवस
B9 दिवस
C12 दिवस
D10 दिवस
Answer & Solution
Correct answer: C. 12 दिवस
A = x आणि B = x + 6 मानल्यास, 1/x + 1/(x+6) = 1/4 वरून x = 6 मिळते, म्हणून B ला 12 दिवस लागतात.
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