Average Problems Tricks | Quantitative Aptitude

Q&A Quiz Reasoning

a number expressing the central or typical value in a set of data, in particular the mode, median, or (most commonly) the mean, which is calculated by dividing the sum of the values in the set by their number.

Practice Arithmetic Average Problems: Average Questions Quiz with Solution for SBI PO, SBI Clerk Mains, IBPS PO, Clerk, RBI, LIC AAO, CET Etc…Average Questions is an an essential part for Competitive Exams like Banking, Insurance, SSC and Railways Exams. This is the aptitude questions and answers section on “Average” with explanation for various interview, competitive examination and entrance test. Learn and practice the chapter “Problems on Averages” with these solved Aptitude Questions and Answers. This is aptitude questions and answers section on Averages with explanation for various interview, competitive examinations and entrance tests.

Averages

Average Questions for Competitive Exams

Q1.Ajit has a certain average for 9 innings. In the 10th innings, he scores 100 runs thereby increasing his average by 8 runs. what is ajit new average:

A.20
B.21
C.28
D.32

Option c – 28

Q2.The average of the first 5 multiples of 9 is:

A.27

B.20

C.17

D37

Q3.What is the average of first 97 natural numbers.

Option A – 27

A.29

B.49

C.57

D.47

Option B – 49

Q4.The average age of three boys is 15 years. If their ages are in ratio 3 : 5 : 7, What is the age of the boy ?

A.9 years

B.19years

C.12years

D.22years

Option A – 9

Q5.The average marks of four subjects is 120. If 33 was misread as 13 during the calculation, find the correct average?

A

120

B.122

C.124

D.125

Option D – 125

Q6.Students of three different classes appeared in common examination. Pass average of 10 students of first class was 70%, pass average of 15 students of second class was 60% and pass average of 25 students of third class was 80% then find the pass average of all students of three classes?

A.70%

B.72%

C.75%

D.45%

Option B – 72%

Q7.There are five boxes in cargo hold. The weight of the first box is 200 kg and the weight of the second box is 20% higher than the weight of the third box, whose weight is 25% higher than the first box’s weight. The fourth box at 350 kg is 30% lighter than the fifth box. What will the difference in the average weight of the four heaviest boxes and the four lightest boxes.

A.75kg

B.55.5kg

C.57.5kg

D.45.5kg

Option A – 75kg

Q8.A school has only four classes that contain 10, 20, 30 and 40 students respectively. The pass percentage of these classes are 20%, 30%, 60% and 100% respectively.What will the pass % of the entire school.

A.66%

B.36%

C.56%

D.34%

Option A – 66%

Q9.The average age of A, B, C, D and E is 40 years. The average age of A and B is 35 years and the average of C and D is 42 years.Find out the Age of E is :

A.46years

B.48years

C.44years

D.86years

Option A – 46years

Q10.The average income of A, B and C is Rs. 12,000 per month and average income of B, C and D is Rs. 15,000 per month. If the average salary of D be twice that of A, What will the average salary of B and C is in Rs. :

A.8000

B.1300

C.12500

D.13500

Option D – 13500

Q11.The average monthly salary of 12 workers and 3 managers in a factory was Rs. 600. When one of the manager whose salary was Rs. 720, was replaced with a new manager, then the average salary of the team went down to 580. find out the salary of the new manager?

A.420

B.320

C.120

D.440

Option A – 420

Q12.In 2011, the arithmetic mean of the annual incomes of Ramesh and Suresh was Rs. 3800. The arithmetic mean of the annual incomes of Suresh and Pratap was Rs. 4800, and the arithmetic mean of the annual incomes of Pratap and Ramesh was Rs. 5800.Find out arithmetic mean of the incomes of the three?

A.4800

B.5800

C.8400

D.4580

Option A – 4800

Q13.There are two sections A and B of a class, consisting of 36 and 44 students’ respectively. If the average weight of section A is 40kg and that of section B is 35kg,What will the average weight of the whole class.

A.37.25kg

B.35kg

C.40kg

D.42.5kg

Option A – 37.25kg

Q14.Nine persons went to a hotel for taking their meals. Eight of them spent Rs. 12 each on their meals and the ninth spent Rs. 8 more than the average expenditure of all the nine. Find out the total money spent by them.

A.117

B.127

C.137

D.122

Option A – 117

Q15.The average of runs of a cricket player of 10 innings was 32. Find How many runes must be made in his next innings so as to increase his average of runs by 4?

A.75

B.76

C.67

D.78

Option B – 76

Q16.The average of 50 numbers is 30. If two numbers, 35 and 40 are discarded, Find out the average of the remaining numbers is nearly:

A.29.78

B.29.86

C.29.68

D.28.80

Option C – 29.68

Q17.The average wages of a worker during a fortnight comprising 15 consecutive working days was Rs.90 per day. During the first 7 days, his average wages was Rs.87/day and the average wages during the last 7 days was Rs.92 /day.Find out the his wage on the 8th day?

A.97

B.87

C.77

D.78

Option A – 97

Q18.Which one of the following numbers can be removed from the set S = {0, 2, 4, 5, 9} without changing the average FInd out the S Value?

A.0

B.2

C.5

D.4

Option D – 4

Q19.Average cost of 5 apples and 4 mangoes is Rs. 36. The average cost of 7 apples and 8 mangoes is Rs. 48. Find the total cost of 24 apples and 24 mangoes.

A.3088

B.2088

C.1088

D.1800

Option B – 2088

Q20.Average of ten positive numbers is x. If each number is increased by 10%, then Find the x :

A.remains unchanged
B.may decrease
C.may increase
D.is increased by 10%

Option D – is increased by 10%

Q21.In the first 10 overs of a cricket game, the run rate was only 3.2. What Will be the run rate in the remaining 40 overs to reach the target of 282 runs? Find out The Result?

A. 6.25
B. 6.5
C. 6.75
D. 7

Option A – 6.25

Q22.A grocer has a sale of Rs. 6435, Rs. 6927, Rs. 6855, Rs. 7230 and Rs. 6562 for 5 consecutive months. How much sale must he have in the 6th month so that he gets an average sale of Rs. 6500?

A. Rs. 4991
B. Rs. 5991
C. Rs. 6001
D. Rs. 6991

Option A – Rs.4991

Q23.The average of 20 numbers is zero. Of then, at the most, how many may be greater than zero?

A. 0
B. 1
C. 10
D. 19

Option D – 19

Q24.The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. Find out the average age of the team?

A. 23 years
B. 24 years
C. 25 years
D. None of these

Option A – 23years

Q25.The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is Rs. 6250 and the average monthly income of P and R is Rs. 5200. Find out The monthly income of P is:

A. 3500
B. 4000
C. 4050
D. 5000

Option B – 4000

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