A contractor can complete a construction project in 20 days working alone. With the help of two additional workers, they can complete the project in 10 days. How many days would it take for the two additional workers to complete the project if they work alone?
A. 5 days
B. 10 days
C. 15 days
D. 20 days
Answer:A
A contractor can complete a construction project in 20 days working alone. With the help of two additional workers, they can complete the project in 10 days. How many days would it take for the two additional workers to complete the project if they work alone?
A. 5 days B. 10 days C. 15 days D. 20 days