To know more about SSC (CGL) Exam ssc-cgl-exam-2017-2018
Q.31 Peter and Paul working together could complete a task in 30 mins. Peter and Pat 40 min, Paul and Pat in 30 min, how much time would Paul alone take to complete the task?
(A) 48 min
(B) 45 min
(C) 50 min
(D) 42 min
Q.32 4 pipes can fill a reservoir in 20, 30, 40 and 60 hrs. respectively. The first was opened at 6 am second at 7 am third at 8 am and fourth at 9 am. When will the reservoir be filled up?
(A) 1 pm
(B) 2 pm
(C) 3 pm
(D) 4 pm
Q.33 A cistern has three pipes A, B, C; A and B can fill it in 4 and 5 hrs. respectively; and C can empty it in 2 hrs. If these pipes are opened in order at noon, at 1 pm and 2 pm, when will the cistern be emptied?
(A) 3 am
(B) 6 am
(C) 4 am
(D) 10 am
Q.34 A, B and C can do a job in 15 days. After working with B and C for 5 days. A, leaves and then B and C finish it in 20 days. A, leaves and then B and C finish it in 20 days more. In how many days can A do the job alone?
(A) 25 days
(B) 27 days
(C) 30 days
(D) 28 1/4 days
Q.35 10 men can complete a work in 18 days. After 6 days, 5 more men joined. In how many days will the remaining work be completed? (all the men are equally efficient).
(A) 6 days.
(B) 12 days
(C) 8 days
(D) 10 days
Q.36. A takes twice as much time as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in:
(A) 4 days
(B) 6 days
(C) 8 days
(D) 12 days
Q.37. men, 4 women and 6 children can complete a work in 7 days. A woman does double the work a man does and a child does half the work a man does. How many women alone can complete this work in 7 days ?
(A) 6
(B) 9
(C) 5
(D) 7
Q.38. X and Y can do a piece of work in 20 days and 12 days respectively. X started the work alone and then after 4 days Y joined him till the completion of the work. How long did the work last?
(A) 6 days
(B) 10 days
(C) 15 days
(D) 20 days
Q.39. A, B and C can complete a piece of work in 24,6 and 12 days respectively.Working together, they will complete the same work in:
(A) 1/24 days
(B) 7/24 days
(C) 24/7 days
(D) 4 days
Q.40. 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) 13 days
(C) 20/3 days
(D) None of these
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