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     EduGorilla 
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    A, B and C can do a piece of work in 20, 24 and 30 days respectively. All three of them began the work together but B left 3 days before completion of the work. In how many days was the work completed? 
    A, B और C क्रमश: 20, 24 और 30 दिनों में एक कार्य को कर सकते है। उन सभी तीनों ने एकसाथ कार्य करना आरंभ किया लेकिन B ने कार्य पूरा होने से 3 दिन पहले कार्य छोड़ दिया। कार्य कितने दिनों में पूरा होगा? 

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