A and B can do a work in 15 days and 25 days, respectively. They worked together for 5 days, after w

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A and B can do a work in 15 days and 25 days, respectively. They worked together for 5 days, after which B was replaced by C and the remaining work was completed by A and C C in the next 4 days. In how many days will C alone complete the same work?
A 24 days
B 20 days
C 15days
D 25 days
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