Dear Aspirants, Our IBPS Guide team is providing new series of Quantitative Aptitude Questions for RRB Clerk Prelims 2021 so the aspirants can practice it on a daily basis. These questions are framed by our skilled experts after understanding your needs thoroughly. Aspirants can practice these new series questions daily to familiarize with the exact exam pattern and make your preparation effective.
Ages
1) The ages of Ramesh and Ram are in the ratio of 17:20. After 6 years, the ratio of the ages of Ramesh to Ram will be 20:23. What was the age of Ramesh 6 years ago?      Â
A.28 years
B.30 years
C.25 years
D.31 years
E.None of these
Trains
2) Two trains of length 210 m and 270 m respectively moving at some speed to pass a man who is standing on a platform in 7 seconds and 9 seconds respectively. In what time will they cross each other, if they are moving in opposite directions?
A.7 seconds
B.10 seconds
C.11 seconds
D.8 seconds
E.None of these
Percentage
3) The sum of the monthly salary of Anu and Sunil is Rs.7000 more than the monthly salary of Bindhu. If the ratio of the monthly salary of Anu and Sunil is 2:5 and the monthly salary of Bindhu is Rs.3500. The monthly salary of Anu is approximately what percent of the monthly salary of Bindhu?
A.85.7%
B.88.6%
C.92.5%
D.78.4%
E.None of these
Mixture and allegation
4) Vessel A contains 28 liters of milk and x liters of water. If 24 liters of mixture is taken out which is contains 8 liters of water, then find the value of x?
A.12 liters
B.14 liters
C.16 liters
D.18 liters
E.20 liters
Probability
5) A box contains x red ball, 5 green ball and 4 blue ball. If one ball is drawn at random from the box and the probability of that ball is red is 2/5, then what is the probability of 2 blue balls is drawn at random from the box?
A.2/35
B.1/35
C.3/35
D.4/35
E.1/7
Caselet
Directions (06-10): Study the following information carefully and answer the questions given below.
A company has four departments HR, IT, Sales and Finance. The number of male employees in HR department is double the number of female employees in IT department. The number of female employees in Finance department is 50% of the number of female employees in HR department. Total number of employees in Finance department is 360. The number of male employees in Sales department is 60 more than the number of female employees in Finance. The number of male employees in IT department is equal to the total number of employees in finance department. Total number of employees in HR is 80 more than the total number of employees in IT. The number of female employees in Sales is 50% of the number of male employees in IT department. The number of male to female employees in Sales department is 11:9.
6) What is the total number of employees in the company?
A.1800
B.1600
C.2000
D.1400
E.None of these
7) The number of female employees in IT is what percent of the total number of employees in Sales?
A.20%
B.25%
C.30%
D.35%
E.None of these
8) What is the difference between the total number of male employees and female employees in all the departments together?
A.210
B.220
C.230
D.240
E.None of these
9) The number of male employees in Finance department is approximately what percent of the total number of employees in HR?
A.36%
B.39%
C.42%
D.45%
E.48%
10) Ratio of the number of undergraduate to postgraduate employees in Sales department is 3:2. Out of 45% of male employees in sales departments is postgraduate. Find the number of female postgraduate employees in Sales department.
A.59
B.61
C.63
D.65
E.67
Answers :
1) Answer: A
Let Ramesh’s age be 17X and Ram’s age be 20X.
391X + 138 = 400X + 120
9X = 18
X = 2
Thus, Ramesh’s present age = 17 x 2= 34 years
6 years ago Ramesh’s age = 34 – 6 = 28 years
2) Answer: D
3) Answer: A
Bindhu = Rs.3500
Anu = 2x
Sunil = 5x
2x + 5x – 3500 = 7000
7x = 10500
x = 1500
Anu = 2 * 1500 = 3000
Required percentage = 3000/3500 * 100 = 85.7%
4) Answer: B
Quantity of mixture = 24 liters
Water in mixture = 8 liters
Milk in mixture = 24 – 8 = 16 liters
Ratio of milk and water = 16:8 = 2:1
x = 1/2 * 28 = 14 liters
5) Answer: A
2/5 = xC1/(9 + x)C1
5x = 18 + 2x
x = 6
Required probability = 4C2/15C2
= 4 * 3/15 * 14
= 2/35
Directions (6-10) :
Number of male employees in IT department = 360
Number of female employees in Sales department = 360 * 50/100 = 180
Number of male employees in Sales department = 11/9 * 180 = 220
Number of female employees in Finance department = 220 – 60 = 160
Number of male employees in Finance department = 360 – 160 = 200
Number of female employees in HR department = 100/50 * 160 = 320
Number of female employees in IT department = x
Number of male employees in HR department = 2x
2x + 320 – (x + 360) = 80
x = 120
Number of female employees in IT department = 120
Number of male employees in HR department = 2 * 120 = 240
Total number of employees in HR department = 240 + 320 = 560
Number of employees in IT department = 360 + 120 = 480
Number of employees in Sales department = 220 + 180 = 400
6) Answer: A
Total number of employees = 560 + 480 + 400 + 360 = 1800
7) Answer: C
Required percentage = 120/400 * 100 = 30%
8) Answer: D
Total male employees = 240 + 360 + 220 + 200 = 1020
Total female employees = 320 + 120 + 180 + 160 = 780
Difference = 1020 – 780 = 240
9) Answer: A
Required percentage = 200/560 * 100 = 36%
10) Answer: B
Number of postgraduate employees in Sales department = 2/5 * 400 = 160
Number of postgraduate male employees = 45/100 * 220 = 99
Number of postgraduate female employees = 160 – 99 = 61
