Maths Mcqs Practice Test

Question 1

A tank can be filled by a pipe in 20 min. and by another pipe in 60 min. \xa0Both the pipes are kept open for 10 min. and then the first pipe is shut off. \xa0After this, the tank will be completely filled in__________?

Accepted Answer

B.\xa020 min

Question 2

A is thrice as good a work man as B and takes 10 days less to do a piece of work than B takes. B can do the work in:___________?

Accepted Answer

A.\xa015 days

Question 3

8 children and 12 men complete a certain piece of work in 9 days. If each child takes twice the time taken by a man to finish the work, in how many days will 12 men finish the same work ?

Accepted Answer

D.\xa012 days

Question 4

15 men can build a 500m long wall in 30 days. In how many days can 30 men build a 1.2 km long wall?

Accepted Answer

D.\xa036 days

Question 5

If 28 men can finish a work in 15 days, 21 men can finish the same work in___________?

Accepted Answer

D.\xa020 days

Question 6

C takes 6 days to complete half of a work and D takes 5 days to complete 1/3rd of the same work. They take turns to complete the task. If C works for the first 4 days, in how many days will D complete the rest of the work without the help of C?

Accepted Answer

A.\xa010 days

Question 7

P,Q and R together earn Rs.1620 in 9 days. P and R can earn Rs.600 in 5 days. Q and R in 7 days can earn Rs.910. How much amount does R can earn per day?

Accepted Answer

B.\xa0Rs.70

Question 8

P and Q can complete a work in 20 days and 12 days respectively. P alone started the work and Q joined him after 4 days till the completion of the work. How long did the work last?

Accepted Answer

B.\xa010 days

Question 9

P can finish a work in 18 days. Q can finish the same work in 15 days. Q worked for 10 days and left the job. how many days does P alone need to finish the remaining work?

Accepted Answer

B.\xa06

Question 10

P can lay railway track between two stations in 16 days. Q can do the same job in 12 days. With the help of R, they completes the job in 4 days. How much days does it take for R alone to complete the work?

Accepted Answer

A.\xa09(3/5) days

Question 11

wo pipes X and Y fill a tank in 15 hrs. and 20 hrs. respectively, while a third pipe ‘Z’ can empty the full tank in 25 hrs. \xa0All the three pipes are opened in the beginning. \xa0After 10 hrs. Z is closed. \xa0In how much time, will the tank be full ?

Accepted Answer

A.\xa012 hrs

Question 12

8 men can dig a pit in 20 days. If a man works half as much again as a boy, then 4 men and 9 boys can dig a similar pit in:__________?

Accepted Answer

B.\xa016 days

Question 13

Efficiency of Rashid and Danish are in the ratio 5:8. If Danish takes 51 days less than Rashid to complete the work, find the time taken by Rashid to complete the work.

Accepted Answer

D.\xa0136 days

Question 14

If 12 men work 8 hours a day to complete a work in 10 days, how many men working 12 hours a day can complete the work in 5 days?

Accepted Answer

A.\xa016

Question 15

If daily wages of a man is double to that of a woman, how many men should work for 25 days to earn Rs.14400? Given that wages for 40 women for 30 days are Rs.21600.

Accepted Answer

C.\xa016

Question 16

Mansoor-Ul-Haque and Aaqib are working on a special assignment. Mansoor-Ul-Haque needs 6 hours to type 32 pages on a computer and Aaqib needs 5 hours to type 40 pages. If both of them work together on two different computers, how much time is needed to type an assignment of 110 pages?

Accepted Answer

C.\xa08 hour 15 minutes

Question 17

Machine P can print one lakh books in 8 hours. Machine Q can print the same number of books in 10 hours while machine R can print the same in 12 hours. All the machines started printing at 9 A.M. Machine P is stopped at 11 A.M. and the remaining two machines complete work. Approximately at what time will the printing of one lakh books be completed?

Accepted Answer

C.\xa01:00 pm

Question 18

P is able to do a piece of work in 15 days and Q can do the same work in 20 days. If they can work together for 4 days, what is the fraction of work left?

Accepted Answer

A.\xa08/15

Question 19

Two pipes P and Q can fill a cistern in 12 min. and 15 min. respectively but a third pipe ‘R’ can empty the full tank in 6 min. \xa0P and Q are kept open for 5 min. in the beginning and then ‘R’ is also opened. \xa0In what time is the cistern emptied ?

Accepted Answer

D.\xa045 min

Question 20

A and B can together do a piece of work in 15 days. B alone can do it in 20 days. In how many days can A alone do it ?

Accepted Answer

C.\xa060 days