A and B can finish a work in 10 days while B and C can do it in 18 days. A started the job, worked for 5 days, then B worked for 10 days and the remaining work was finished by C in 15 days. In how many days could C alone have finished the whole work ?



[ A ]    30 days
[ B ]    15 days
[ C ]    45 days right
[ D ]    24 days
[ E ]    None of these
Answer : Option C
Explanation :
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