alleryएक पाइप अकेले एक टंकी को 15 मिनट में भरता है; दूसरे पाइप के साथ मिलकर इसे 6 मिनट लगते हैं। अकेले दूसरे पाइप को कितना समय लगेगा?
A10 मिनट
B12 मिनट
C8 मिनट
D9 मिनट
Answer & Solution
Correct answer: A. 10 मिनट
दूसरे पाइप की दर = 1/6 - 1/15 = 3/30 = 1/10 है, अतः इसे 10 मिनट लगेंगे।
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