A, B and C can finish a work in 20, 25, and 30 days, respectively. They start working together but \(B\) quits after working for 3 days. In how many days from the start shall the work be completed?

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Q: 40 (CAPF/2024)
A, B and C can finish a work in 20, 25, and 30 days, respectively. They start working together but \(B\) quits after working for 3 days. In how many days from the start shall the work be completed?

question_subject: 

Mathematics

question_exam: 

CAPF

Calculate the combined rate of work for A, B, and C for the first 3 days, then A and C's combined work rate for the remaining days. Total work days equal approximately 10.2 or 10 \(\frac{1}{5}\) days.