Time and Work Maths Questions for Competitive Exams

Maths Related Questions of Time and Work 

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            

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