IBPS RRB Probationary Officier Exam 2018 : Practice Test Paper (Set-6)

IBPS RRB PO (PRE) Exam - 2018

(Practice Questions)

Q51. A tank is fitted with 8 pipes, some of which that fill the tank and others that empty the tank. Each of the pipes that fills the tank fills it in 8 hours, while each of those that empty the tank empties it in 6 hours. If all the pipes are kept open when the tank is full, it will take 6 hours to drain the tank. How many of these are fill pipes?
(a) 5
(b) 3
(c) 4
(d) 6
(e) None of these

Q52. The average monthly salary of 12 workers and 3 managers in a factory was 600. When one of the managers whose salary was 720, was replaced with a new manager, the average salary of the team went down to 580. What is the salary of the new manager?
(a) 320
(b) 350
(c) 450
(d) 420
(e) None of these

Q53. A sum of money invested for a certain number of years at 8% p.a. simple interest amounts to Rs.180. The same sum of money invested for the same number of years at 4% p.a. simple interest amounts to Rs.120 only. For how many years was the sum invested?
(a) 25 years
(b) 35 years
(c) 32 years
(d) 28 years
(e) None of these

Q54. A, B and C enter into a partnership by investing Rs.3600, Rs.4400 and Rs.2800. A is a working partner and gets a fourth of the profit for his services and the remaining profit is divided among the three in the ratio of their investments. What is the amount of profit that B gets if A gets a total of Rs. 1800?
(a) Rs. 1200
(b) Rs. 1100
(c) Rs. 1300
(d) Rs. 1400
(e) None of these

Q55. The barrel of a fountain pen is cylindrical in shape whose radius of base is 0.7 cm and is 5 cm long. One such barrel in the pen can be used to write 300 words. A barrel full of ink which has a capacity of 15.4 cubic cm can be used to write how many words?
(a) 540 words
(b) 430 words
(c) 600 words
(d) 590 words
(e) None of these

Directions (61-65): In each of these questions, a number series is given. In each series, only one number is wrong. Find out the wrong number.

Q61. 3601, 3602, 1803, 604, 154, 36, 12
(a) 3602
(b) 1803
(c) 604
(d) 154
(e) 36

Q62. 4, 12, 42, 196, 1005, 6066, 42511
(a) 12
(b) 42
(c) 1005
(d) 196
(e) 6066

Q63. 2, 8, 12, 20, 30, 42, 56
(a) 8
(b) 42
(c) 30
(d) 20
(e) 12

Q64. 32, 16, 24, 65, 210, 945, 5197.5
(a) 945
(b) 16
(c) 24
(d) 210
(e) 65

Q65. 7, 13, 25, 49, 97, 194, 385
(a) 13
(b) 49
(c) 97
(d) 194
(e) 25

Q76. There are three positive integers. One-third of the average of the three numbers is 8 less than the value of the highest number. The average of the lowest and the second lowest number is 8. What is the highest number?
(a) 12
(b) 13
(c) 14
(d) 11
(e) None of these

Q77. A mixture contains wine and water in the ratio of 3: 2 and another mixture contains them in the ratio of 4: 5. How many litres of the latter must be mixed with 3 litres of the former so that the resultant mixture may contain equal quantities of wine and water?
(a) 4.5 litres
(b) 5.4litres
(c) 6.2 litres
(d) 5.5 litres
(e) None of these

Q78. A dishonest dealer mixes 1 kg of sand with 5 kg of rice and sells the entire mixture at 25% more than the cost price of rice. What is his net profit percentage in this transaction?
(Assume that sand comes free)
(a) 50%
(b) 60%
(c) 55%
(d) 45%
(e) None of these

Q80. A boat can travel ‘x’ km upstream in 4 hours and ‘y’ km downstream in 3 hours. If the speed of boat in still water is 5 km/h and the boat can travel a distance of ‘x+y’ km downstreamin 4 hours, then find the speed of stream?
(a) 2 km/hr
(b) 5 km/hr
(c) 4 km/hr
(d) 3 km/hr
(e) None of these