Cognizant Time & Work Quiz-1

Question 1

Time: 00:00:00

Raj can build a house alone in 16 days but Suraj alone can build it in 12 days. Raj and Suraj work on alternate days. If Raj works on first day, the house will be built in how many days?

12.5 days

13(3/4) days

48/7 days

24/7 days

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Question 2

Time: 00:00:00

A can complete a work in 12 days and B can complete in 8 days. A works for 8 hours every day while B works for 10 hours every day. If A and B together start working 8 hours per day, in how many days will they complete the work?

8 days

60/11 days

39/12 days

15/8 days

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Question 3

Time: 00:00:00

If Ram and Shyam together can build a house in 10 days; Ram and Arun can build it together in 12 days and Shyam and Arun can build it in 15 days. Shyam, Ram and Arun start working together. In how many days they build the house?

6 days

4 days

8 days

12 days

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Question 4

Time: 00:00:00

P can do a job in 15 days. In how many days can P and Q together complete the job if Q is twice as fast as P?

3 days

5 days

8 days

10 days

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Question 5

Time: 00:00:00

Mahesh asked 32 men to build his house in 20 days. 80% of the work got completed in just 12 days. So Mahesh removed some workers. Now how many persons does he need to complete the remaining work in decided time?

12

20

32

16

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Question 6

Time: 00:00:00

A takes twice as much time as B or thrice as much time as C to finish a piece of work; working together they can finish the work in 2 days. A can do the work alone in

8 days

10 days

4 days

6 days

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Question 7

Time: 00:00:00

A can do 1/4^th part of work in 10 days and B can do 40% work in 40 days and C can do 1/3^rd of the work in 13 days. Who will complete the work first?

A

B

C

B AND C

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Question 8

Time: 00:00:00

A and B can finish a piece of work in 30 days, B and C can finish it in 15 days, C and A in 10 days. Time taken by them together to do this work is?

5 days

2(1/2) days

7(1/2) days

10 days

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Question 9

Time: 00:00:00

P and Q can do a work in 12 days. Q and R can do the same work in 16 days, and R and P can do it in 24 days. Find the time in which P, Q and R can finish the work together.

9(3/4) days

10 days

11(1/4) days

10(2/3) days

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