A alone can do a work in 20 days. B is 25% more efficient th

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A alone can do a work in 20 days. B is 25% more efficient than A. A and B started working and worked for 4 days, then C alone completed the remaining job in 22 days. In how many days C alone can complete the entire job?

[IBPS PO prelim 13 OCT 2018 G]

A 30

B 35

C 40

D 42

E 45