Can do a certain job in 14 days B is 40\% more efficient than a How many days does B alone take to do the same job?

∴ B alone can complete the work in 10 days.

Can do a job 12 days B is 60\% more efficient than a how many days B will take to complete the job alone?

Since B is 60\% more efficient than A, the fraction of the total job completed on one day by B will be 60\% more than that of A. Hence B finishes the job in 7.5 days.

Is 60\% more efficient than B if A takes 15 days to complete the work than A and B together complete the work in how many days?

A is 60\% more efficient than B. A can complete the work in 15 days. They will need 120/13 days to finish it together.

Can do a piece of work in 24 days?

Work done by B in 1 day =124+60100×124=10240+6240=16240=115. Therefore, the number of days required by B to complete the same quantity of work as A is 15 days. We know that the number of days required by B to finish the original work is 15 days. So, to finish a work which is 2 times the previous work is 15×2=30.

How many days can A B and C alone complete a work?

A, B and C can alone complete a work in 10, 12 and 15 days respectively. A and C started the work and after working for 4 days, A left and B joined. In how many days the total work was completed?

Is a twice as efficient as B?

A is twice efficient as B. A and B together do the same work in as much time as C and D can do together. If the ratio of the number of alone working days of C to D is 2:3 and if B worked 16 days more than C then no of days which A worked alone?

Can A and B work together to complete a work?

E. None If A and B work together can complete a work in 8/5 days. A started the work alone and completed. 50\% of the work and left the work then B started the work alone and finished the rest of work. They took total 5 days to complete the work. Then in how many days B can complete the work if A is more efficient than A?

How much work can A B and C do together?

A, B and C can alone complete a work in 10, 12 and 15 days respectively. All started the work but B left the work 3 days before completion. How much work was then done by A and B together in the total work?