A and B can finish a project in 15 and 10 days, respectively. They began working together, but after two days, B had to depart, leaving A to finish the remaining tasks on her alone. The entire project was finished in:
A. 8 days
B. 10 days
C. 12 days
D. 15 days
Answer:C
A and B can finish a project in 15 and 10 days, respectively. They began working together, but after two days, B had to depart, leaving A to finish the remaining tasks on her alone. The entire project was finished in:
A. 8 days B. 10 days C. 12 days D. 15 days