A task may be completed in 8 days by 4 men and 6 women, or 10 days by 3 men and 7 women. How long will it take 10 women to finish it?
A. 35
B. 40
C. 45
D. 50
Answer:B
A task may be completed in 8 days by 4 men and 6 women, or 10 days by 3 men and 7 women. How long will it take 10 women to finish it?
A. 35 B. 40 C. 45 D. 50
Explanation: Let 1 day's work for a man be x and 1 day's labour for a woman be y.4x + 6y = 1/8 and 3x + 7y = 1/10, respectively.We get the following results when we solve the two equations: = 11/400, y = 1/4001 day's work for 1 lady Equals 1/400.1 day's work for 10 women = 1/400 x 10 = 1/40.As a result, the task will be completed in 40 days by ten women.