Practice Time and work Questions and Answers

• P and Q together can do a piece of work in 30 days, Q and R together can do it in 20 days. P starts the work and works on it for 5 days, then Q takes it up...
• Sachin can complete a job in 15 days. Ankit alone can complete the same job in 10 days. Sachin works for 9 days and then the remaining job is completed by ...
• If 3 men with 4 boys can earn Rs. 2940 in 7 days and 5 men with 9 boys earn Rs. 4620 in 6 days. In how many  days will 5 men with 3 boys earn  Rs. 1180?...
• P and Q can do a piece of work in 32 and 40 days respectively. They began to work together but P leaves after sometimes and Q completed remaining work in 1...
• A can do a piece of work in 12 days, while B alone can do it in 18 days. They work together for 6 days and the rest of the work is completed by C in 4 days...
• Q can do a work in 15 days and R can do the two-third work done by P and Q together in a day. If R completes the work in 18 days, how many days will it tak...
• 14 boys can do a work in  X days and 22 girls can do the same work in (X + 10).The ratio  of work done by 7 boys and 9 girls in the same time is ...
• P and Q can do a piece of work in 32 and 40 days respectively. They began to work together but P leaves after sometimes and Q completed remaining work in 1...
• P can complete a piece of work in 15 days. Q in 20 days and R in 30 days. P and R worked together for three days and then P was replaced by Q. In how many ...
• A team leader can do a job as fast as three members of the team working together. If one of the members can do the job in 5 hrs, the second one takes 10 hr...
• 25 men can complete a piece of work in 13 days. One man starts the work and after every day one more man joins the work and this continues till the work is...
• A group of workers was put on a job. From the second day onwards, 1 worker left work everyday. If no worker was left when 52% of the work gets completed, f...
• Two pipes A and B can fill a tank in 24 min., and 32 min, respectively. If both the pipes are opened simultaneously, after how much time B should be closed...
• Three machines P,Q and R were hired by a company for a month. Machine P runs 18 hours for 15 days, machine Q runs 20 hours for 18 days and machine R runs 2...
• A and B together can do a piece of work in 30 days, B and C together can do it in 20 days. A starts the work and works on it for 5 days, then B takes it up...
• Jack is twice efficient as Jill and Jill can do a piece of work in 30 days. Jill started the work and after a few days Jack joined him. They completed the ...
• Sachin can complete a job in 15 days. Ankit alone can complete the same job in 10 days. Sachin works for 9 days and then the remaining job is completed by ...
• Krishna can do a piece of work in 25 days. He alone worked at it for 10 days and then Balram completed alone the rest work in 20 days. In how many days, th...
• A man, a woman and a boy can do a work in 4, 8, 16 days respectively. How many boys were required with 1 man and 1 woman to complete the same work in 1/2 d...
• Suraj is one third as good as workman as Pankaj and together they finish a piece of work in 36 days. The number of days taken by Suraj alone to finish the ...
• 4 men and 6 women together or 8 men can complete a piece of work in 20 days. 6 men and 6 women will complete the same work in
• 3 men, 4 women and 5 boys can do a piece of work in 15 days, 20 days and 25 days respectively. For first 3 days 3 men and 2 women work together and for the...
• Sushil can type 40 lines in 20 minutes but he leaves 8% margin on each line. In how much time he will type 46 pages with 80 lines on each page in which he ...
• A can do a piece of work in 28 days, while B can do the same piece of work in 42 days. They begin working together and 6 days before completion of work, A ...
• A can do 1/4th  of a work in 15 days, B can do the 25% of the work in 20 days & C can do 1/5th  of the work in 15 days. Who will complete the...
• 5 girls can do a piece of work in 9 days, 4 boys can do the same piece of work in 8 days, 6 men do the same piece of work in 2 days and 4 women can do the ...
• Brahma, Vishnu and Mahesh are three workers, employed by a Contractor. They completed the whole work in 20 days. Initially all of them worked together, but...
• 9 children can complete a piece of work in 360 days. 18 men can complete the same piece of work in 72 days and 12 women can complete the piece of work in 1...
• A man is thrice as fast as a women and a woman is twice as fast as a boy. If all of them can do a work in 18 days. than a boy can do the work in?
• Avinash is twice as good as Bhuvanesh and together they can finish a job in 50 days. Bhuvanesh will finish the work alone in how many days?
• A job is done by 15 men in 30 days and 30 women in 20 days. How many days will it take for 8 men and 12 women to finish the work?
• 15 men can complete a piece of work in 5 days, while 20 women can complete it in 5 days. 8 men start working on the job & after working for 3 days, all...
• Ram can do a piece of work in 50 days. He alone worked at it for 20 days and then Lakshman completed alone the rest work in 30 days. In how many days, they...
• Efficiency of A and B are in the ratio of 2 : 3. If both can do a work together in 60 days. Find out how much days A will take to complete the work alone?
• Efficiency of A, and B are in the ratio of 3 : 4. If both can do a work together in 30 days. Find out how much days A will take to complete the work alone?
• P can complete a job in 30 days. Q alone can complete the same job in 20 days. P works for 18 days and then the remaining job is completed by Q. How many d...
• X, Y and E can do piece of work in 24, 30 and 40 days respectively. All three began to work together but X and Y left 6 and 8 days respectively before comp...
• Billy, Tony and Mike were three workers, employed by a Contractor. They completed the whole work in 20 days. Initially all of them worked together, but the...
• A man, a woman and a boy can do a work in 4, 8, 32 days respectively. How many boys are required with 1 man and 1 woman to complete the same work in&n...
• A can do a piece of work in 12 days, while B alone can do it in 18 days. They work together for 6 days and the rest of the work is completed by C in 4 days...