Averages
Average: How to calculate Average, Average Formula, Weighted average, Mean Average, Average Questions with Solutions
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Online Aptitude Questions with Answers on Averages
Q66. **The average age of seven persons sitting in a row facing east is 28 years. If the average age of the first three persons is 21 years and the average age of the last three persons is 34 years, then find the age of the person sitting in the middle of the row?**
- 30 Years
- 31 years
- 26 years
- 33 years
Solution : 31 years
Q67. **The average height of 35 boys in a class was calculated as 180cm. It has later found that the height of one of the boys in the class was wrongly written as 166 cm whereas his actual height was 106 cm. Find the actual average height of the boys in the class (Round off your answer to two decimal places).**
- 179.29 cm
- 178.29 cm
- 179.38 cm
- 178.39 cm
Solution : 178.29 cm
Q68. **The total marks obtained by a student in Physics, Chemistry and Mathematics is 150 more than the marks obtained by him in Physics. What is the average mark obtained by him in Chemistry and Mathematics?**
- 75
- 150
- 50
- Cannot be determined
Solution : 75
Q69. **The present average age of a family of five members is 26 years. If the present age of the youngest member in the family is ten years, then what was the average age of the family at the time of the birth of the youngest member ? (Assume no death occurred in the family since the birth of the youngest)**
- 18 years
- 14 years
- 20 years
- 10 years
Solution : 20 years
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Q70. **The average of four positive integers is 69. The highest integer is 93 and the least integer is 39. The difference between the remaining two integers is 28. Which of the following integers is the higher of the remaining two integers?**
- 58
- 86
- 49
- 55
Solution : 86
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