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

Q71. **A student scored an average of 80 marks in 3 subjects: Physics, Chemistry and Mathematics. If the average marks in Physics and Mathematics is 90 and that in Physics and Chemistry is 70, what are the marks in Physics?**

1.  60
2.  64
3.  72
4.  80

Solution : 80
Q72. **The average mark of the students of a class in a particular exam is 80. If 5 students whose average mark in that exam is 40 are excluded, the average mark of the remaining will be 90. Find the number of students who wrote the exam.**

1.  20
2.  15
3.  25
4.  35

Solution : 25
Q73. **In an exam, Amar scored 64 percent, Bhavan scored 36 percent and Chetan 44 percent. The maximum score awarded in the exam is 800. Find the average mark scored by all the three boys?**

1.  384
2.  364
3.  324
4.  404

Solution : 384
Q74. **The average height of 50 pupils in a class is 150 cm. Five of them whose height is 146 cm, leave the class and five others whose average height is 156 cm, join. The new average height of the pupils of the class (in cm) is __________ .**

1.  149
2.  151
3.  152
4.  153

Solution : 151

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Q75. **Rahim bought 65 books for Rs.1150 from one shop and 50 books for Rs.920 from another. What is the average price he paid per book ?**

1.  Rs.20
2.  Rs.18
3.  Rs.22
4.  Rs.16

Solution : Rs.18
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