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     EduGorilla 
    Keymaster

    P, Q and R together can complete a work in 40 days. P and Q together can complete the same work in 90 days. Then R alone can complete the same work in how many days?

    एक कार्य P, Q और R मिलकर 40 दिनों में कर सकते हैं। समान कार्य P और Q मिलकर 90 दिनों में कर सकते हैं। तो समान कार्य R अकेले कितने दिनों में पूरा कर सकता है? 

    Options :-

    1. 40 

    2. 72 

    3. 84 

    4. 90 

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