If 12 workers can build a wall in 50 hours, how many workers will be required to do the same work in 40 hours?
A. 10
B. 13
C. 14
D. 15
Answer:D
If 12 workers can build a wall in 50 hours, how many workers will be required to do the same work in 40 hours?
A. 10 B. 13 C. 14 D. 15
Explanation: 12 × 50 = x × 40