Average Practice Question and Answer
8 Q: In an exam, the average marks obtained by the students was found to be 60. After omission of computational errors, the average marks of 100 candidates had to be changed from 60 to 30 and the average with respect to all the examinees came down to 45 marks. The total number of candidates who took the exam, was.
1592 05f2a80cbcef453383f1e8766
5f2a80cbcef453383f1e8766- 1240false
- 2180false
- 3200true
- 4210false
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Answer : 3. "200 "
Q: A cricketer had a certain average of runs for his 64 innings. In his 65th innings, he is bowled out for no score on his part. This brings down his average by 2 runs. His new average of runs is:
1585 05f2a8dc6a7bb0b71009fdc07
5f2a8dc6a7bb0b71009fdc07- 170false
- 268false
- 3130false
- 4128true
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Answer : 4. "128 "
Q: The average of eleven numbers is 68. The average of the first numbers is 78 and that of the next four number is 63. The 9th number is two time the 11th number and the 10th number is 4 less than the 11th number. What is the average of the 9th and 11th numbers?
1584 06051c6e0d3e3d30b29d9a74e
6051c6e0d3e3d30b29d9a74e- 170.1false
- 270.5true
- 372.6false
- 472.2false
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Answer : 2. "70.5"
Q: The average of 10 numbers is calculated as 15. It is discovered later on that while calculating the average one number, namely 36, was wrongly read as 26. The correct average is:
1570 05f2a90a3a5ce9779bd29b969
5f2a90a3a5ce9779bd29b969- 116true
- 214false
- 320false
- 418false
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Answer : 1. "16 "
Q: There are 100 students in 3 sections A, B and C of a class. The average marks of all the 3 sections was 84. The average of B and C was 87.5 and the average marks of A is 70. The number of students in A was.
1543 05f2a8829a5ce9779bd29853d
5f2a8829a5ce9779bd29853d- 120true
- 225false
- 330false
- 435false
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Answer : 1. "20 "
Q: Average weight of 10 men increases by 3.5 kg when a man of 50 kg is replaced by a new man what is the age of new person? 1542 05d19d3907619fe30b9d34595
5d19d3907619fe30b9d34595- 185 kgtrue
- 284 kgfalse
- 382 kgfalse
- 480 kgfalse
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Answer : 1. "85 kg"
Explanation :
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Q: The average of 24 number is 65. The average of first 11 number is 67 and the average of last 10 number is 70. If the 12th Number is 13 less than the 13th number , and the 14th number is one more than the 13th number, then the average of 12th and 14th number is:
1539 05f2e6b156bb2fc29b22c6a29
5f2e6b156bb2fc29b22c6a29- 124false
- 236false
- 339true
- 442false
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Answer : 3. "39"
Q: The average salary of all employees working in an office is Rs.8000. The average salary of 7 technicians is Rs 12000 and the average salary of rest of the workers is Rs.6000. The total no. of workers working in that office is- 1529 05d19f5821388cd24f08614e7
5d19f5821388cd24f08614e7- 120false
- 221true
- 323false
- 422false
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Answer : 2. "21"
Explanation :
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