Average Questions for IBPS RRB Prelims Exam: 14th July 2018

Numerical Ability or Quantitative Aptitude Section has given heebie-jeebies to the aspirants when they appear for a banking examination. As the level of every other section is only getting complex and convoluted, there is no doubt that this section, too, makes your blood run cold. The questions asked in this section are calculative and very time-consuming. But once dealt with proper strategy, speed, and accuracy, this section can get you the maximum marks in the examination. Following is the Quantitative Aptitude quiz to help you practice with the best of latest pattern questions.

Q1. The average of five numbers is 23. If the average of first two numbers is 21 and that of last two numbers is 19, what is the third number from starting?
(a) 35
(b) 32
(c) 30
(d) 40
(e) 25

Q2. In a class of 42 students, the average age of all students is 16 years. Due to admission of 6 new students in the class the average age increases by ½ years. Find the average age of new students admitted.
(a) 20 years
(b) 22 years
(c) 18 years
(d) 24 years
(e) 30 years

Q3. The ratio of two positive numbers is 3 : 5 and the average of the number is 48. What is the difference of numbers? 
(a) 28
(b) 26
(c) 24
(d) 22
(e) 32

Q4. The average age of Rinku and Ridipta is 18 years. When Rita replaces Ridipta, the average age is increased by 1 and when Ridipta replaces Rinku the average age becomes 17 years. What is the age of Rita? 
(a) 20 years
(b) 18 years
(c) 16 years
(d) 22 years
(e) 28 years

Q5. The average of five consecutive even numbers is 28. What is difference between squares of largest number and second smallest number? 
(a) 340
(b) 345
(c) 348
(d) 350
(e) 450

Q6. The ratio of the ages of A, B and C is 3 : 4 : 5. If the average of their ages is 24 years then what is the sum of ages of B and C?
(a) 45 years
(b) 54 years
(c) 58 years
(d) 52 years
(e) 64 years

Q7. The average age of a group of 14 person is 27 years and 9 months. Two persons, each 42   year old, left the group. What will be the average age of the remaining persons in the group?  
(a) 26.875 years
(b) 26.25 years
(c) 25.375 years
(d) 25 years
(e) None of these

Q8. The average age of some males and 15 females is 18 years. The sum of the ages of 15 females is 240 years and average age of males is 20 years. Find the number of males. 
(a) 8
(b) 7
(c) 10
(d) 15
(e) 12

Q9. The average age of the mother and her 6 children is 12 years which is reduced by 5 years if the age of the mother is excluded. How old is the mother?
(a) 42 years
(b) 40 years
(c) 48 years
(d) 50 years
(e) 55 years

Q10. In the afternoon, a student read 100 pages at the rate of 60 pages per hour. In the evening, when she was tired, she read next 100 pages at the rate of 40 pages per hour. What was her average rate of reading, in pages per hour? 
(a) 60
(b) 70
(c) 48
(d) 50
(e) 65

Directions (11-15): In each of the following questions two equations are given. You have to solve the equations and 
Give answer —
(a) if x < y
(b) if x ≤ y
(c) if x = y or relationship between x and y cannot be determined
(d) if x ≥ y
(e) if x > y

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