Basic Maths Mcqs


Q.  A and B can finish a work 30 days if they work together. They worked together for 20 days and then B left. A finished the remaining work in another 20 days. In how many days A alone can finish the work?

a. 70
b. 50
c. 40
d. 60


ANSWER: See Answer
 
Amount of work done by A and B in 1 day = 1/30

Amount of work done by A and B in 20 days = 20 × (1/30) = 20/30 = 2/3

Remaining work – 1 – 2/3 = 1/3

A completes 1/3 work in 20 days

Amount of work A can do in 1 day = (1/3)/20 = 1/60

=> A can complete the work in 60 days
MCQs:  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?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  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. All the three pipes are opened in the beginning. After 10 hrs. Z is closed. In how much time, will the tank be full ?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  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:__________?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  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.
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  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?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  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.
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  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?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  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?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  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?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  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 ?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  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 ?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  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?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  Jameel can complete a task in 15 hours and Nasir can complete the same task in 12 hours. Jameel starts the task at 9:00 am and stops working at 2:00pm. Nasir starts working on the task at 4:00 pm. At what time is the task completed?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  P can do a work in 24 days. Q can do the same work in 9 days and R can do the same in 12 days. Q and R start the work and leave after 3 days. P finishes the remaining work in_________days.
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  Kamal will complete work in 20 days. If Suresh is 25% more efficient than Kamal, he can complete the work in________days.
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A completes 80% of a work in 20 days. Then B also joins and A and B together finish the remaining work in 3 days. How long does it need for B if he alone completes the work?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  12 buckets of water fill a tank when the capacity of each bucket is 13.5 litres. How many buckets will be needed to fill the same tank, if the capacity of each bucket is 9 litres?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A leak in the lower portion of a tank can empty the full tank in 9 hrs. An inlet pipe fills water at the rtae of 10 lit. a minute. When the tank is full, the inlet is opened and due to leak, the tank is empty in 16 hrs. How many litres does the cistern hold ?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A can do (1/3) of a work in 5 days and B can do (2/5) of the work in 10 days. In how many days both A and B together can do the work ?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A alone can finish a work in X days. B alone can finish the same work in X+5 days. Together, they take 6 days to complete the work. Find X
Category: Mathematics Quizzes,   Published by: teswesm