Q1.
A is twice as good as B and together they finish a piece of work in 16 days. The number of days taken by A alone to finish work is?
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Q2.
A can do a piece of work in 9 days. While B can do it in 12 days. A & B together can do the same work in
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Q3.
A and B can together do a piece of work in 6 days and A alone can do it in 9 days. The number of days B will take to do it alone is:
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Q4.
A can do a piece of work in X days and B can do the same work in 3X days. To finish the work together they take 12 days. What is the value of X?
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Q5.
A can do a piece of work in 10 days and B in 20 days. They begin together but A leaves 2 days before the completion of work. The whole work will be done in
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Q6.
Curie and Rutherford can research a paper in 45 days and 40 days respectively. They began to do the work together, but Curie leaves after some days and Rutherford completed the remaining research in 23 days. The number of days after which Curie left the work?
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Q7.
A and B can do a piece of work in 18 days. B and C can do it in 24 days. A and C can do it in 36 days. Find the time in which A, B and C, working together can finish the work.
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Q8.
A, B and C can complete a work in 2 days. If A does the job alone in 6 days and B in 5 days. How long will it take for C to finish the job alone?
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Q9.
A is 30% more efficient than B. How much time will they working together take to complete a job which A alone could have done in 23 days?
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Q10.
A is twice as good a workman as B and is therefore able to finish a piece of work in 30 days less than B. In how many days they can complete the whole work, working together?
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Q11.
K can do 2/3 of a work in 6 days and J can do 1/3 of the same work in 4 days. How long will they take, if they work together to finish the work?
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Q12.
A is thrice as good as B in work. A is able to finish a job in 60 days less than B. They can finish the work in how many days, working together?
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Q13.
A and B can do a piece of work in 45 days and 40 days respectively. They began to do the work together but A leaves after some days and then B completed the remaining work in 23 days. The number of days in which total work is completed?
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Q14.
A and B together complete a piece of work in T days. If A alone completes the work in T + 3 days and B alone completes the piece of work in T + 12 days, what is T?
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Q15.
10 women can complete a work in 7 days & 10 children take 14 days to complete the work. How many days will 5 women and 10 children take to complete work?
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Q16.
Four men and three women can do a job in 6 days. Five men and six women work on the same job, the work gets completed in 4 days. How many days will a woman take to do the job, if she works alone on it?
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Q17.
X and Y can complete a work in 12 days and 16 days respectively. Both work for 3 days and then X leaves the work. In how many days will Y alone finish the remaining work?
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Q18.
2 men or 3 women can complete a job in 96 days. Then 6 men and 7 women will complete the same job in how many days?
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Q19.
The rate of working of Sita and Kamala are in the ratio 2:3. The number of days taken by them to finish the work in the ratio?
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Q20.
Shankar can do a piece of work in 15 days. Hari is 50% more efficient than Shankar. The number of days Hari will take to do the same piece of work is
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Q21.
A takes 4 days more and B takes 9 days more than the time taken by A and B together. In how many days will they finish the work together?
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Q22.
A takes 5 days and B takes 8 days more than the time taken by A and B together. In how many days will they finish the work together?
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Q23.
A can do 1/2 of work in 10 days. B can do 1/3 of the work in 20 days. In how many days can both A and B do the work together?
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Q24.
A, B, C can complete a work in 20, 24 and 30 days respectively. They started the work together, but after 5 days A left. In how many days will the remaining work be finished?
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Q25.
Amar, Ram and Bidur can complete a work in 30, 36, 45 days respectively. They started the work together but after 8 days Ram left due to illness. In how many days is the remaining work finished?
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Q26.
A can do a piece of work in 12 days, which B can finish in 18 days. If they work on alternate days with A beginning, in how many days will the work be finished?
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Q27.
A contractor employed 50 men to complete the project in 100 days. But later on he realized that just after 25 days only 20% of the work had been completed. How many extra days, than the scheduled time, are required?
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Q28.
36 workmen are employed to finish a certain work in 48 days. But it is found that in 24 days only half the work is done. How many more men must be employed to finish the work in time?
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Q29.
A, B and C can do a piece of work in 20, 24 & 15 days respectively. They work alternatively, first day C, second day B and third day A. How many days will be needed to complete the work like this way?
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Q30.
A does half as much work as B in three-fourths of the time. If together they take 18 days to complete the work, how much time shall B take to do it?
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Q31.
A alone can finish a work in 15 days and B can finish it in 10 days. If they work together and finish it, then out of a total wages of Rs. 4500, B will get:
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Q32.
B and C completed a piece of work costing Rs. 1800. A worked for 6 days, B for 4 days and C for 9 days. If their daily wages are in the ratio 5:6:4, how much amount will be received by A?
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Q33.
Aaditay, Pratibha and Bhawana earn Rs. 450 per day, while Aaditay and Bhawana together earn Rs. 290 and Pratibha and Bhawana earn Rs. 280. The daily earning of Bhawana is:
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Q34.
The rate of working of A and B are in the ratio 5:7. The number of days taken by them to finish the work are in the ratio:
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Q35.
A single person takes 8 minutes to type a page. If from 1:00 pm to 2:00 pm, 1710 pages are to be typed, how many persons should be employed on this job?
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Q36.
10 men are employed to do a piece of work. After some days, 4 men left. Consequently, the work which was likely to be completed in 40 days, was completed in 50 days. After how many days did the 4 men leave?
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Q37.
A, B and C working alone can finish a piece of work in 24 days, 32 days and 64 days respectively. They start working together. A leaves after working for 6 days and B leaves 6 days before the work is finished. In how many days could the work be completed?
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Q38.
A sum is sufficient to pay A's wages for 21 days and B's wages for 28 days. Find for how many days the money is sufficient to pay the wages of both.
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Q39.
A manufacturer builds a machine which will address 500 envelopes in 8 minutes. He wishes to build another machine so that when both are operating together they will address 500 envelopes in 2 minutes. The equation used to find how many minutes x it would require the second machine to address 500 envelopes alone is?
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Q40.
Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all three pipes are opened together, then the tank will be filled in
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Q41.
A pump can fill a tank with water in 2 hours. Because of a leak, it took — hours to fill the tank. The leak can drain all the water of the tank in
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Q42.
Two taps A and B fill a tank in 10 hours and 8 hours respectively. If both the taps are opened simultaneously, then how many hours before tap B should be closed so that the tank fills in 5 hours?
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