A. 7
B. 8
C. 9
D. 6
P takes twice as much time as Q or thrice as much time as R to finish a piece of work. They can finish the work in 2 days if work together. How much time will Q take to do the work alone?
A. 7
B. 8
C. 9
D. 6
A. 7
B. 8
C. 9
D. 6