A takes twice as much time as b or thrice as much time as c to finish a piece of work. working together, they can finish the work in 2 days. b can do the work alone in
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1/x+1/2x+1/3x= 1/2
x=3
B takes 3x days..that is 9 days
x=3
B takes 3x days..that is 9 days
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