Top 100 Quantitative Aptitude Questions and Answers

Important Aptitude Questions with Answers

Q.11. Two pipes A and B can fill a tank in 24 hours and hours respectively. Harihar opened the pipes A and B to fill an empty tank and sometimes later he closed the taps A and B , when the tank was supposed to be full. After that it was found that the tank was emptied in 2.5 hours because an outlet pipe "C" connected to the tank was open from the beginning. If Harihar closed the pipe C instead of closing pipes A and B the remaining tank would have been filled in:

(A) 8 hours

(B) 2 hours          

(C) 4 hours

(D) 6 hours          

Q.12.  9 men and 12 boys finish a job in 12 days, 12 men and 12 boys finish it in 10 days. 10 men and 10 boys shall finish it in how many days?

(A) 11 days

(B) 15 days          

(C) 12 days

(D) 14 days         

Q.13. Kaushalya can do a work in 20 days, while kaikeyi can do the same work in 25 days. They started the work jointly. Few days later Sumitra also joined them and thus all of them completed the whole work in 10 days. All of them were paid total Rs.700. What is the Share of Sumitra?

(A) Rs.185

(B) Rs.130            

(C) can't be determined

(D) Rs.70              

Q.14. Four pipes P, Q, R and S can fill a cistern in 20,25, 40 and 50 hours respectively. The first pipe P was opened at 6:00 am, Q at 8:00 am, R at 9:00 am and S at 10:00 am. when will the Cistern be full?

(A) 3:09 pm

(B) 4:18 pm         

(C) 11:09 am

(D) 12:15 pm      

Q.15. If 2 men and 3 women can do a piece of work in 8 days and 3 men and 2 women in 7 days. In how many days can the work be done by 5 men and 4 women working together?

(A) 6 days

(B) 3 days            

(C) 2 days

(D) 4 days            

Q.16. 4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it?

(A) 36 days

(B) 40 days          

(C) 34 days

(D) 32 days          

Q.17. A contractor undertook a project to complete it in 20 days which needed 5 workers to work continuously for all the days estimated. But before the start of the work the client wanted to complete it earlier than the scheduled time, so the contractor calculated that he needed to increase 5 additional men every 2 days to complete the work in the time the client wanted it:

If the work was further increased by 50% but the contractor continues to increase the 5 workers o every 2 days then how many more days are required over the initial time specified by the client.

(A) 2 days

(B) 1 day              

(C) None of these

(D) 5 days            

Q.18. A and B together can do a piece of work in 40 days. A having worked for 20 days, B finishes the remaining work alone in 60 days. In How many days shall B finish the whole work alone?

(A) 70

(B) 60     

(C) 90

(D) 80    

Q.19. A can finish a work in 18 days and B can do the same work in half the time taken by A. then, working together, what part of the same work they can finish in a day?

(A) One-fourth work

(B) Total work    

(C) Two-third work

(D) Half work     

Q.20. A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days?

(A) 11 days

(B) 9 days            

(C) 15 days

(D) 13 days         

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