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| Q.20 | रानू एक कार्य को 10 दिनों में पूरा कर सकती है जबकि रूबी उसी कार्य को 15 दिनों में पूरा कर सकती है। रानू से शुरू करते हुए, यदि वे एकांतर आधार पर एक-एक दिन कार्य करते हैं, तो पूरा कार्य कितने दिनों में समाप्त हो जाएगा? | |
| Ans | 1. 12 | |
| 2. 11 | ||
| 3. 14 | ||
| 4. 13 |
Correct Ans Provided: 1
