Mathematics · Time and Work
A और B मिलकर एक कार्य को 5 दिनों में पूरा कर सकते हैं। B अकेला उसी कार्य को 55 दिनों में पूरा कर सकता है। A अकेले उस कार्य का दोगुना कार्य पूरा करने में कितना समय (दिनों में) लेगा?
- 15.5
- 212
- 311✓
- 414
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11
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