Mathematics · Time and Work
पाइप A और B एक टैंक को क्रमशः 6 घंटे और 9 घंटे में भर सकते हैं। पाइप C इसे 15 घंटे में भर सकता है। यदि तीनों पाइपों को एक साथ खोल दिया जाए, तो टैंक कितने समय में भर जाएगा?
- 14 घंटे
- 261 20 घंटे
- 344 5 घंटे
- 490 31 घंटे✓
सही उत्तर देखें
90 31 घंटे
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