If 3 men or 4 women can construct a wall in 43 days, then the number of days that 7 men and 5 women take to construct it is?
A. 12
B. 18
C. 24
D. 30
Answer:A
If 3 men or 4 women can construct a wall in 43 days, then the number of days that 7 men and 5 women take to construct it is?
A. 12 B. 18 C. 24 D. 30