If 10 people can do a job in 20 days,then 20 people with twice the efficiency can do the same job in
A can do a work in 20 days and B in 50 days. If they work on it together for 5 days, then what fraction of work is left?
Akash is 3 times as good a workman as Baldev and therefore is able to finish a job in 40 days less than Baldev. Working together, they can finish it in _____.
A can do a work in 12 days and B in 24 days. If they work on it together for 4 days, then what fraction of work is left?
P, Q and R together can make a table in 40 minutes. P and Q together can make it in 60 minutes. How much time (in minutes) will R alone take to make the table?
A can do a work in 15 days and B in 9 days. If they work on it together for 5 days, then what fraction of work is left?
X, Y and Z can do a piece of work in 30,40 and 50 days respectively. All three of them began the work together but Y left 4 days before completion of the work. In how many days was the work completed?
A and B together do a job in 12 days and A could do the job in 20 days if he worked alone. How many days would B take to do the job if he worked alone?
A, B and C can do a job working alone in 12, 16 and 24 days respectively. In how many days they can do the job if they worked together?
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