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Important Examples: Averages Notes | Study CSAT Preparation for UPSC CSE - UPSC

Document Description: Important Examples: Averages for UPSC 2022 is part of CSAT Preparation for UPSC CSE preparation. The notes and questions for Important Examples: Averages have been prepared according to the UPSC exam syllabus. Information about Important Examples: Averages covers topics like and Important Examples: Averages Example, for UPSC 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Important Examples: Averages.

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Important Examples: Averages Notes | Study CSAT Preparation for UPSC CSE - UPSC

Q.1. The average monthly salary of 12 workers and 3 managers in a factory was Rs. 600. When one of the managers whose salary was Rs. 720, was replaced with a new manager, the average salary of the team went down to Rs. 580. What is the salary of the new manager?
(a) Rs. 570
(b) Rs. 420
(c) Rs. 690
(d) Rs. 640
(e) Rs. 610

Correct Answer is Option (b).

Salary of the new manager is 420.


Q.2. The average wage of a worker during a fortnight comprising 15 consecutive working days was Rs. 90 per day. During the first 7 days, his average wage was Rs. 87/day and the average wage during the last 7 days was Rs. 92/day. What was his wage on the 8th day?
(a) Rs. 83
(b) Rs. 92
(c) Rs. 90
(d) Rs. 97
(e) Rs. 96

Correct Answer is Option (d).

His wage on the 8th day was 97.


Q.3. The average of 5 quantities is 6. The average of 3 of those 5 quantities is 8. What is the average of the remaining two quantities?
(a) 6.5
(b) 4
(c) 3
(d) 3.5
(e) 4.2

Correct Answer is Option (c).

3 is the average of the remaining two quantities.

Question for Important Examples: Averages
Try yourself:The average temperature on Wednesday, Thursday, and Friday was 25°. The average temperature on Thursday, Friday, and Saturday was 24°. If the temperature on Saturday was 27°, what was the temperature on Wednesday?
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Question for Important Examples: Averages
Try yourself:A class had 9 students. In one test, the class average was 61. One student's paper was scored incorrectly, and the resulting score was raised by 18 points. What is the corrected class average?
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Question for Important Examples: Averages
Try yourself:The average age of a group of 12 students is 20 years. If 4 more students join the group, the average age increases by 1 year. The average age of the new students is ____
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Question for Important Examples: Averages
Try yourself:When a student weighing 45 kg left a class, the average weight of the remaining 59 students increased by 200 g. What is the average weight of the remaining 59 students?
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Question for Important Examples: Averages
Try yourself:Three math classes: X, Y, and Z take an algebra test.
(i) The average score in class X is 83.
(ii) The average score in class Y is 76.
(iii) The average score in class Z is 85.
(iv) The average score of all students in classes X and Y together is 79.
(v) The average score of all students in classes Y and Z together is 81.

What is the average score for all the three classes, taken together?

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Question for Important Examples: Averages
Try yourself:The average weight of a class of 24 students is 36 kg. When the weight of the teacher is also included, the average weight increases by 1 kg. What is the weight of the teacher?
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Question for Important Examples: Averages
Try yourself:The average of 5 quantities is 10 and the average of 3 of them is 9. What is the average of the remaining 2?
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Question for Important Examples: Averages
Try yourself:The average age of a family of 5 members is 20 years. If the age of the youngest member is 10 years, what was the average age of the family just a day before the birth of the youngest member?
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Question for Important Examples: Averages
Try yourself:A student finds an average of 10 positive integers. Each integer contains two digits. By mistake, the student interchanges the digits of one number say ba for ab. Due to this, the average becomes 1.8 less than the previous one. What is the difference between the two digits a and b?
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Question for Important Examples: Averages
Try yourself:Average cost of 5 apples and 4 mangoes is Rs. 36. The average cost of 7 apples and 8 mangoes is Rs. 48. What is the total cost of 24 apples and 24 mangoes?
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Question for Important Examples: Averages
Try yourself:Average weight of 25 boys in a class is 48 kg. The average weight of a class of 40 students is 45 kg. What is the average weight of the 15 girls in the class?
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