Question

A can do a work in 24 days. B is 20% less efficient than
A. Both A and B worked together for 4 days. B and C working together completed the remaining work in 14 hearts. In how much time can A, B and C together complete 11/12th of the original work? 

A 12 Day
B 8 Day
C 9 Day
D 10 Day
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