Average Practice Question and Answer
8Q: Average age of 21 men reduces by 1 year when a man of 32 years is replaced by a child. What is the age of that child? 1382 05d19d5011388cd24f0860efa
5d19d5011388cd24f0860efa- 110 yearsfalse
- 211 yearstrue
- 39 yearsfalse
- 48 yearsfalse
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Answer : 2. "11 years"
Explanation :
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Q: The average of marks obtained by 14 students was 71, but it was found later that one of the student’s mark was accounted as 42 instead of 56 and for the other student; it was accounted as 74 instead of 32. So, the find the actual average? 1365 05d19df8b7619fe30b9d34a61
5d19df8b7619fe30b9d34a61- 167false
- 268false
- 369true
- 471false
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Answer : 3. "69"
Explanation :
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Q: The average of marks obtained by 120 candidates in an examination is 35. The average of marks obtained by passed candidates is 39 and that of for failed candidates is 15. What is the no. of passed candidates? 1349 05d19d8bd1388cd24f0860f10
5d19d8bd1388cd24f0860f10- 1100true
- 2120false
- 3150false
- 4140false
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Answer : 1. "100"
Explanation :
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Q: The average of seven numbers is 18. If one of the number is 17 and if it is replaced by 31, then the average becomes:
1330 05f2a7ddc7079852b553cc9c8
5f2a7ddc7079852b553cc9c8- 120true
- 221false
- 321.5false
- 419.5false
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Answer : 1. "20 "
Q: The average of marks scored by the students of a class is 68. The average of marks of the girls in the class is 80 and that of the boys is 60. What is the percentage of boys in the class?
1326 05f2a5f24cef453383f1e38ad
5f2a5f24cef453383f1e38ad- 165%false
- 270%false
- 340%false
- 460%true
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Answer : 4. "60% "
Q: The average salary, per head, of all the workers of an institution, is Rs. 60. The average salary of 12 officers is Rs. 400; the average salary, per head, of the rest is Rs. 56. The total number of workers in the in situation is
1326 05f2a89b8cef453383f1ed26c
5f2a89b8cef453383f1ed26c- 11032true
- 21020false
- 31030false
- 41035false
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Answer : 1. "1032 "
Explanation :
Q: The average weight of 15 oarsmen in a boat is increased by 1.6 kg when one of the crews, whose weighs 42 kg is replaced by a new man. Find the weight of the new man (in kg).
1312 05f479a3809e4377de945ee30
5f479a3809e4377de945ee30- 166true
- 243false
- 367false
- 465false
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Answer : 1. "66"
Q: The average score obtained by Sandeep in 12 Tests is 25. Rumella has an average of 23 marks so far, but has competed in only 8 Tests. What average will Rumela have to earn in the remaining 4 Tests to be equal to Raghuveer's average?
1301 05f97f373f6ce7f2367fe01c5
5f97f373f6ce7f2367fe01c5- 128false
- 229true
- 326false
- 427false
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