Mathematics MCQs

Page No. 74

Farjan and Kashif can complete a task in 30 days. Farjan leaves after 20 days and Kashif alone completes it in another 25 days. How many days does Farjan alone take to complete the entire task?


a50


b75


c60


d45


View Answer 50

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 ?


a40 days


b50 days


c60 days


d70 days


View Answer 60 days

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. P and Q are kept open for 5 min. in the beginning and then ‘R’ is also opened. In what time is the cistern emptied ?


a30 min


b35 min


c40 min


d45 min


View Answer 45 min

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?


a8/15


b7/15


c11/15


d2/11


View Answer 8/15

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?


a3 pm


b2 pm


c1:00 pm


d11 am


View Answer 1:00 pm

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?


a7 hour 15 minutes


b7 hour 30 minutes


c8 hour 15 minutes


d8 hour 30 minutes


View Answer 8 hour 15 minutes

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.


a15


b14


c16


d13


View Answer 16

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?


a16


b4


c12


d8


View Answer 16

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.


a85 days


b126 days


c118 days


d136 days


View Answer 136 days

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:__________?


a12 days


b16 days


c18 days


d20 days


View Answer 16 days

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