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Average question are important in bank/PO exam and also in state Govt Exams, SSC CGL and various private sectors companies written exam. Generally the question asked in Average section are simple if you practice them really hard and use tips and tricks to solve Average questions in short time quickly.
In this article we have briefed you about various important tip and shortcuts to solve average question in Quantitative aptitude. Please go through them one by one and try to practice as many question you can
Answer: D. 37
Explanation: 16x + 85 = 17(x + 3)
x = 34 + 3 = 37
Answer: B. 5.5
Explanation: Sum of 10 natural no. = 110/2 = 55
Average = 55/10 = 5.5
Question : he average age of three boys is 15 years and their ages are in proportion 3:5:7. What is the age in years of the youngest boy?
A. 9
B. 12
C. 15
D. 18
Answer: A. 9
Explanation: 3x + 5x + 7x = 45
x = 3
3x = 9
Question : The average of 9 observations was 9, that of the 1st of 5 being 10 and that of the last 5 being 8. What was the 5th observation?
A. 6
B. 7
C. 8
D. 9
Answer: D. 9
Explanation: 1 to 9 = 9 * 9 = 81
1 to 5 = 5 * 10 = 50
5 to 9 = 5 * 8 = 40
5th = 50 + 40 = 90 – 81 = 9
Question : A team of eight entered for a shooting competition. The best marks man scored 85 points. If he had scored 92 points, the average scores for. The team would have been 84. How many points altogether did the team score?
A. 625
B. 632
C. 656
D. 665
Answer: D. 665
Explanation: 8 * 84 = 672 – 7 = 665
Question: A batsman makes a score of 64 runs in the 16th innings and thus increased his average by 3. Find his average after the 16th inning?
A. 17
B. 18
C. 19
D. 20
Answer: C. 19
Explanation: Let the average after the 16th inning be P.
So, the average after the 15th inning will be (P-3)
Hence, 15(P-30) + 64 = 16P => P = 19
Quiz on Average Questions for Practice
Question : Find the average of first 10 multiples of 7
Question :Kritika is on a 4 days trip with school mates. She had decided to keep her average expense for 4 days at Rs 80. However, at the end of third day she realized that her expenses on first three days were Rs 80, Rs 90, Rs 110 and respectively. How much should she spend on 4th day to ensure that she meets her targeted average expense?
a. Rs. 40
b. Rs. 60
c. Rs. 90
d. Rs. 220
Question Find average of natural numbers from 1 to 67?
a. 33.5
b. 34
c. 50
d. 67
Question : The average weight of 48 students of a class is 36 kg. If the weights of teacher and principle is included. The average becomes 36.76 kg. Find the sum of the weights of teacher and principle?
A. 108 kg
B. 106Kg
C. 118 Kg
D. 110 Kg
Questions : The average revenues of 11 consecutive years of a company is Rs. 77 lakhs. If the average of first 6 years is Rs. 72 lakhs and that of last 6 years is Rs. 84 lakhs, What is the revenue for the sixth year.
A. Rs. 89 lakhs
B Rs. 88 lakhs
C Rs. 83 lakhs
D Rs. 84 lakhs