Question 11 : A can do a job in 16 days, and B can do the same job in 12 days. With the help of C, they did the job in 4 days. Then, C alone can do the job in
1. 12 3/5 days
2. 8 3/5 days
3. 10 3/5 days
4. 9 3/5 days
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Question 12 : A works twice as fast as B. If B can complete a work in 12 days independently, the number of days in which A and B can together finish the work is
1. 4 days
2. 3 days
3. 6 days
4. 5 days
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Question 13 : A is 50% as efficient as B. C does half of the work done by A and B together. If C alone does the work in 40 days, then A, B and C together can do the work in
1. 15 1/3 days
2. 13 1/3 days
3. 14 1/3 days
4. 12 1/3 days
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Question 14 : A and B can do a piece of work in 30 days, while B and C can do the same work in 24 days and C and A in 20 day. They all work together for 10 days, after which B and C leave. How many days more will A take to finish the work?
1. 20 days
2. 19 days
3. 18 days
4. 22 days
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Question 15 : A and B together can complete a work in 12 days. A alone can complete it in 20 days. If B does the work only for half a day daily, then in how many days A and B together will complete the work?
1. 17 days
2. 18 days
3. 15 days
4. 16 days
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Question 16 : 12 men can complete a piece of work in 4 days, while 15 women can complete the same work in 4 days. 6 men start working on the job and after working for 2 days, all of them stopped working. How many women should be put on the job to complete the remaining work, if it is to be completed in 3 days?
1. 16
2. 15
3. 18
4. 19
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Question 17 : A can do piece of work in 30 days while B alone can do it in 40 days. In how many days can A and B working together do it?
1. 17 1/7 days
2. 15 2/3 days
3. 15 2/7 days
4. 17 2/7 days
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Question 18 : A can do a piece of work in 7 days of 9 hours each, and B can do it in 6 days of 7 hours each. How long will they take to do it, working together 8 2/5 hours a day?
1. 2 2/3 days
2. 2 days
3. 3 1/3 days
4. 3 days
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Question 19 : A can do 1/3 of the work in 5 days and B can do 2/5 of the work in 10 days. In how many days both A and B toether can do the work?
1. 9 3/8 days
2. 8 2/3 days
3. 8 3/5 days
4. 9 3/5 days
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Question 20 : A and B can together finish a work in 30 days. They workd on it for 20 days, and then B left. The remaining work was done by A alone in 20 more days A alone can finish the work in
1. 62 days
2. 58 days
3. 56 days
4. 60 days
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