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. unt of work Q does in 1 day = 2/x
B. P takes x days to complete the work
C. unt of work P does in 1 day = 1/x
D. 6
E. t; Q takes 12/2 days = 6 days to complete the work
F. = 2
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