Mathematics · Pipes and Cisterns
दो पाइप एक टंकी को क्रमशः 2 घंटे और 3 घंटे में भर सकते हैं। यदि दोनों पाइपों को एक साथ खोल दिया जाए, तो टंकी को भरने में कितना समय लगेगा?
- 11 घंटा 30 मिनट
- 22 घंटे
- 31 घंटा 20 मिनट
- 41 घंटा 12 मिनट✓
सही उत्तर देखें
1 घंटा 12 मिनट
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