alleryA को 12 दिन और B को 24 दिन लगते हैं। कार्य समाप्त होने से 3 दिन पहले A कार्य छोड़ देता है। कुल कितना समय लगा था?
A10 दिन
B9 दिन
C12 दिन
D8 दिन
Answer & Solution
Correct answer: A. 10 दिन
B कुल x दिन कार्य करता है और A (x - 3) दिन कार्य करता है: x/24 + (x-3)/12 = 1 से x = 10 दिन प्राप्त होता है।
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