allery15 श्रमिकों का एक दल किसी कार्य को 30 दिनों में पूरा कर सकता है। 10 दिनों के बाद, 5 और श्रमिक शामिल हो जाते हैं। शेष कार्य पूरा होने में कितना समय लगेगा?
A18 दिन
B15 दिन
C12 दिन
D10 दिन
Answer & Solution
Correct answer: B. 15 दिन
शेष कार्य = 15 x 20 = 300 श्रमिक-दिन है, और 20 श्रमिक इसे 15 दिनों में पूरा करते हैं।
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