A and B can complete a job together in $12.5$ days. B and C can complete the same job together in $18.75$ days, while C and A can complete the same jo...
Question
A and B can complete a job together in $12.5$ days. B and C can complete the same job together in $18.75$ days, while C and A can complete the same job together in $15$ days. In how many days will A, B, and C together be able to complete the same job alongside D, who is only as efficient as C?