### Work & Time

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- eduadmin
- February 15, 2012
- Uncategorized

**1. A can do a work in 10 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :**

A. 1/5

B. 1/10

C. 2/5

D. 8/15

Ans. A

**2. A can finish a work in 18 days and B can do the same work in 15 days. B worked for 10 days and left the job. In how many days, A alone can finish the remaining work?**

A. 17

B. 6

C. 5

D. 10

Ans. B

**3. X and Y can together finish a work 30 days. They worked together for 20 days and then Y left. After another 20 days, X finished the remaining work. In how many days X alone can finish the work?**

A. 55

B. 61

C. 48/9

D. 60

Ans.D

**4. X alone can do a piece of work in 6 days and Y alone in 8 days. X and Y undertook to do it for Rs. 3200. With the help of Z, they completed the work in 3 days. How much is to be paid to Z?**

A. 300

B. 400

C. 500

D. 485

Ans.B

**5. X can do a piece of work in 4 hours; Y and Z together can do it in 3 hours, while X and Z together can do it in 2 hours. How long will Y alone take to do it?**

A. 18 hrs

B. 10 hrs

C. 12 hrs

D. 11 hrs

Ans.C

**6. X can do a certain work in the same time in which Y and Z together can do it. If X and Y together could do it in 10 days and Z alone in 50 days, then Y alone could do it in:**

A. 25 hrs

B. 20 hrs

C. 15 hrs

D. 16 hrs

Ans.A

**7. A machine X can print one lakh books in 8 hours, machine Y can print the same number of books in 10 hours while machine Z can print them in 12 hours. All the machines are started at 9 A.M. while machine X is closed at 11 A.M. and the remaining two machines complete work. Approximately at what time will the work (to print one lakh books) be finished ?**

A. 1.15 P.M.

B. 12 noon

C. 1.00 P.M.

D. 1.30 P.M.

Ans.C

**8. X works twice as fast as Y. If Y can complete a work in 12 days independently, the number of days in which X and Y can together finish the work in :**

A. 4 days

B. 5 days

C. 6 days

D. 3 days

Ans.A

**9. Twenty women can do a work in sixteen days. Sixteen men can complete the same work in fifteen days. What is the ratio between the capacity of a man and a woman?**

A. 3:4

B. 4:3

C. 4:5

D. 5:4

Ans.B

**10. Rob and Tob are working on an assignment. Rob takes 6 hours to type 32 pages on a computer, while Tob takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?**

A. 8 hours 30 minutes

B. 8 hours 16 minutes

C. 8 hours 20 minutes

D. 8 hours 15 minutes

Ans.D