Sharman is 20 percent less efficient than Vivek. If Vivek can make a helmet in 20 days, then in how many days can Sharman make the same helmet?

A and B can complete a work separately in 10 days and 15 days, respectively. B alone worked for 3 days and then he left the work. In how many days will A finish the remaining work?

X and Y together can do a piece of work in 30 days. Z alone can do it in 60 days. If they worked together, then in how many days they can finish the work?

P, Q, and R can do some work in 11 days, 20 days, and 55 days respectively. In how many days can the work be done, if P gets the assistance of Q and R on alternate days?

A, B and C can do a piece of work in 11 days, 20 days and 55 days respectively. If B works daily and is supported by A and C on alternate days beginning with A, then in how many days will the work be finished?

A and B can complete a piece of work in 10 and 16 days respectively. A begins to do the work and they work alternatively one at a time for one day each. The whole work will be completed in :

A, B, and C can independently complete the same task in 4, 6, and 12 days, respectively. In how many days will they be able to complete the same task if they work together?

Raju and Raman can complete a piece of work in 12 days and 16 days, respectively. If they work on alternate days, starting with Raju, in how many days will the work be completed?

If the efficiency of Raghav in doing a work is 2.5 times that of Raj. Both of them together take 10 days to complete a work. Find the time taken by Raj alone.

P, Q, and R can complete a piece of work in 10 days, 15 days, and 20 days, respectively. If they work together, in how many days can they finish the same work?

A can do a piece of work in 12 days and B can do it in 30 days. They work on alternate days; starting with A. In how many days will the work be completed? 

A works thrice as fast as B. If B can complete a work in 256 days independently, then find the number of days in which A and B can together finish the work.

X can finish a work in 144 days, Y can finish a work in 240 and Z can finish the same piece of work in 320 days. If X, Y, and Z are working together to complete a work, how many days will they require to complete the work?

M is thrice as efficient as a workman as N and therefore is able to finish a job in 242 days less than N. Then N can finish the entire work in how many days?

A works thrice as fast as B. If B can complete a work in 244 days independently, then find the number of days in which A and B can together finish the work.

A can do a piece of work in 10 days and B can do it in 12 days. They work together for 3 days. Then B leaves and A alone continues. 2 days after that C joins and the work is completed in 2 days more. In how many days can C do it, if he works alone?

Aman and Rajan are working at a construction site. In an engineering experiment, Aman is constructing a wall, while Rajan is demolishing that wall. Aman can completely build the wall in 15 days, while Rajan will take 20 days to completely demolish the wall. In how many days will the complete wall be built for the first time if they work on alternate days, with Aman working on the 1st day?

Mahesh and Suresh can complete a work in 16 days and 12 days, respectively. Starting with Mahesh, they work on an alternate basis. How many days will it take to finalise the complete work?

A can do a piece of work in 24 days and B can do it in 80 days. B works alone for 2 days and A works alone on the 3rd day. This process continues till the work is completed. In how many days will the work be completed?

If Mohit can complete 2/3^th of the work in 24 days, then in how many days can 1/9^th of the work be complete by him?

Amit alone can complete a piece of work in 15 days and Balbir alone can do the same work in 10 days. If Amit alone works for 3 days after which Balbir joins him, then the work will be finished in how many days?

A can complete a certain work in 36 days. B is 33\(1\over3\)% less efficient than A, and C is 50% less efficient than B. All three started the work together, but A left 9 days after the start of the work and B left 3 days before the completion of the work. In how many days was the whole work completed? 

A and B can together complete a task in 16 days. They started a task together and after 4 days A leave, B takes 24 days to finish the rest of the task. How many days would B have taken to do the task if he worked alone?

A and B alone can do a piece of work in 7 days and 14 days respectively. In how many days the work will be completed if they both work on alternate days starting with A?

B alone can complete half of a work in 150 days. In 30 days what percentage of the work will be completed by B?

Arvind can do a work in 20 days and Bakshi in 22 days. If they work on it together for 5 days, then the fraction of the work that is left is :

To do a certain work, A is 40% more efficient than B. Working together; they can do the same work in 15 days. A started the work and left after 15 days. B and C together completed the remaining work in the next 10 days. C alone can do one-third of the original work in:

Anil works 3 times faster than Sandeep. If Sandeep can complete a work independently in 12 days, the number of days in which Anil and Sandeep can together finish the work is:

A, B, and C together can complete a work in x, 30, and 45 days, respectively. B and C worked together for 6 days. The remaining work was completed by A alone in 12 days. The value of x is:

A can complete a piece of work in 25 days while B can complete the same work in 30 days. They work on alternate basis, starting with A. Both A and B follow this pattern for 5 days and then A leaves the work. In how many days will B finish the remaining work?

A and B can complete a certain work in 6 days and 8 days, respectively. They worked together for 3 days. C alone completed the remaining work in 2 days. B and C together can complete 3/4 of the same work in :

Samira can do a piece of work in 9 days. Sujata can do \(\frac{1}{3}\) of the same work in 3 days. If Samira worked alone for 2 days and left, then in how many days can Sujata alone complete the remaining work?

John can do a piece of work alone in 20 days, while Ravi can do the same piece of work alone in 28 days. In how many days can the duo complete the same work if they work together?

P alone can complete a work in 15 days and Q alone can complete the same work in 12 days. They start the work together but after 3 days P leaves the work. How much time will Q take to finish the remaining work?

When A alone does a piece of work, he takes 25 days more than the time taken by A and B to do the work together. On the other hand, B alone takes 16 days more than the time taken by A and B to do the work together. How many days will A and B, working together, take to do the work?

Worker A can make a wall in 15 days and works only on odd days while worker B demolishes the wall in 20 days and works only on even days. Find the time taken to build the wall when they both work together.

Aryan and Harshita are working on a college project. Aryan can complete this project in 16 days, while Harshita can complete this project in 10 days. If they work together, find in how many days they will complete the project.

Three friends can complete a puzzle in 4 hours. If they invite two more friends to help, how long will it take to complete the same puzzle?

If the efficiency of Raghav in doing a work is 2.5 times that of Raj. Both of them together take 10 days to complete a work. Find the time taken by Raj alone.

A and B can complete a piece of work in 18 days and 12 days, respectively. They work on alternate days till the work gets completed. How long (in days) would it take A and B to complete the work, starting with A on the first day?

Ram and Ramesh can do a work in 12 days, Ramesh and Somesh in 15 days and Somesh and Ram in 10 days. If Ram, Ramesh and Somesh work together, in how many days will they complete the work?

A and B, working together, take 15 days to complete a piece of work. If A alone can do this work in 18 days, then how long would B take to complete the same work? 

Suresh and Anil are working on a special project. Suresh takes 5 hours to type 40 pages and Anil needs 6 hours to type 32 pages on a computer. How much time will it take them to type a 110-page assignment if they work on two different computers?

A can do a piece of work in 64 days. If B is 13.33% more efficient than A, then what is the number of days required by A and B together to do the same piece of work?

A can do 10% of a piece of work in one day and B can do 20% of the same work in one day. In how many days will they together complete the work?

A, B, and C together can build a wall in 24 days. C is 2 times as efficient as B and A alone can build a wall in 42 days. In how many days can A and B together build the wall?

A can type 20 pages in 8 minutes. B can type 8 pages in 20 minutes. Working together, how many pages can they type in 40 minutes?

The ratio of the efficiency of A, B, and C is 2 : 3 : 5 respectively and C alone can complete the work in 12 days. If A and C started the work and after 5 days, B also joined them, then in how many days A, B and C together to complete the remaining work?

Vinay can do the work in 15 days and Sanjay can do the same work in 10 days. They started working together and Vinay left after some days. After that Sanjay work alone and complete the remaining work in 5 days. After how many days did Vinay leave work?

A and B can do a piece of work in 5 days and 10 days, respectively. They began the work together, but A left after some days and B finished the remaining work in 8 days. After how many days did A leave?