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February 2, 2017

Aptitude Test-7-Time and Work

Welcome to your Aptitude Test-7-Time and Work

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1) A can do a piece of work in 10 days. He works at it for 4 days and then B finishes it in 9 days. In how many days can A and B together finish the work?
2) If 12 men do a work in 80 days, in how many days will 16 men do it?
3) A can do a piece of work in 15 days and B in 20 days. They began the work together but 5 days before the completion of the work, A leaves. The work was completed in?
4) A, B and C can do a piece of work in 24, 30 and 40 days respectively. They start the work together but C leaves 4 days before the completion of the work. In how many days is the work done?
5) After working for 6 days, Ashok finds that only 1/3 rd of the work has been done. He employs Ravi who is 60% as efficient as Ashok. How many days more would Ravi take to complete the work?
6) A can do a piece of work in 12 days. When he had worked for 2 days B joins him. If the complete work was finished in 8 days. In how many days B alone can finish the work?
7) 9 men and 12 boys finish a job in 12 days, 12 men and 12 boys finish it in 10 days. 10 men and 10 boys shall finish it in how many days?
8) A can do a piece of work in 4 days. B can do it in 5 days. With the assistance of C they completed the work in 2 days. Find in how many days can C alone do it?
9) 5 men and 12 boys finish a piece of work in 4 days, 7 men and 6 boys do it in 5 days. The ratio between the efficiencies of a man and boy is?
10) A is thrice as efficient as B and is, therefore, able to finish a piece of work 10 days earlier than B. In how many days A and B will finish it together?
11) A can do a piece of work in 30 days. He works at it for 5 days and then B finishes it in 20 days. In what time can A and B together it?
12) A and B can do a piece of work in 6 2/3 days and 5 days respectively. They work together for 2 days and then A leaves. In how many days after that B will complete the work alone.
13) A, B and C can do a piece of work in 7 days, 14 days and 28 days respectively. How long will they taken, if all the three work together?
14) A, B and C can do a work in 6, 8 and 12 days respectively doing the work together and get a payment of Rs.1800. What is B’s share?
15) Ravi can do a piece of work in 30 days while Prakash can do it in 40 days. In how many days will they finish it together?
16) A and B can do a piece of work in 7 days. With the help of C they finish the work in 5 days. C alone can do that piece of work in?
17) A and B together can do a work in 6 days. If A alone can do it in 15 days. In how many days can B alone do it?
18) If A, B and C together can finish a piece of work in 4 days. A alone in 12 days and B in 18 days, then C alone can do it in?
19) A and B can do a piece of work in 12 days and 16 days respectively. Both work for 3 days and then A goes away. Find how long will B take to complete the remaining work?
20) A is twice as good a work man as B and together they finish the work in 14 days. In how many days A alone can finish the work?
21) A can do a job in 18 days and B can do it in 30 days. A and B working together will finish twice the amount of work in ------- days?
22) A and B together can do a piece of work in 8 days. If A alone can do the same work in 12 days, then B alone can do the same work in?
23) A can do a piece of work in 40 days; B can do the same in 30 days. A started alone but left the work after 10 days, then B worked at it for 10 days. C finished the remaining work in 10 days. C alone can do the whole work in?
24) A can finish a piece of work in 5 days. B can do it in 10 days. They work together for two days and then A goes away. In how many days will B finish the work?
25) A and B can do a piece of work in 3 days, B and C in 4 days, C and A in 6 days. How long will C take to do it?
26) A work which could be finished in 9 days was finished 3 days earlier after 10 more men joined. The number of men employed was?
27) A and B complete a work in 6 days. A alone can do it in 10 days. If both together can do the work in how many days?
28) A and B can finish a work in 16 days while A alone can do the same work in 24 days. In how many days B alone will complete the work?
29) Anil can do a work in 15 days while Sunil can do it in 25 days. How long will they take if both work together?
30) A can do a piece of work in 10 days and B can do it in 15 days and C can do it 20 days. They started the work together and A leaves after 2 days and B leaves after 4 days from the beginning. How long will work lost?

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