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The efficiencies of A,B and C are in the...

The efficiencies of A,B and C are in the ratio 4 : 5 : 6. Working together, they can complete a work in 12 days. In how many days will A alone be able to complete that work?
A, B तथा C की कार्य क्षमता 4 : 5 : 6 के अनुपात में है | एक साथ कार्य करते हुए वे किसी कार्य को 12 दिन में पूरा कर सकते हैं | A अकेले इस कार्य को कितने दिन में कर पाएगा ?

A

45

B

36

C

30

D

40

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The correct Answer is:
A
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