alleryA को अकेले कार्य करने में B से 6 दिन कम लगते हैं, और दोनों मिलकर इसे 4 दिनों में पूरा करते हैं। अकेले B को कितना समय लगेगा?
A8 दिन
B9 दिन
C12 दिन
D10 दिन
Answer & Solution
Correct answer: C. 12 दिन
A = x और B = x + 6 रखने पर, 1/x + 1/(x+6) = 1/4 से x = 6 प्राप्त होता है, अतः B को 12 दिन लगेंगे।
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