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A and B can do a work in 12 days, B and ...

A and B can do a work in 12 days, B and C can do it in 15 days and C and A can do it in 20 days. If A, B and C work together, then they will complete the same work in:
A और B एक कार्य को 12 दिनों में कर सकते हैं, B और C इसे 15 दिनों में कर सकते हैं और C और A इसे 20 दिनों में कर सकते हैं। यदि A, B और C एक साथ कार्य करते हैं, तो वे उसी कार्य को कितने समय में पूरा करेंगे?

A

12 days

B

5 days

C

10 days

D

14 days

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