Aman and Ajay can build a wall in 9 days and 12 days respectively. In how many days can they finish the work if they work together?
A. 551/7
B. 111/2
C. 2
D. 7
Answer:A
Aman and Ajay can build a wall in 9 days and 12 days respectively. In how many days can they finish the work if they work together?
A. 551/7 B. 111/2 C. 2 D. 7