Average Practice Question and Answer
8 Q: 16 children are to be divided into two group A and B consisting of 10 and 6 children. The average percent marks obtained by the children of Group A is 75 and the average percent marks of all the 16 children is 76. What is the average percent marks of children of Group B?
2078 05f5afb19dc518b408a418a15
5f5afb19dc518b408a418a15- 1$$ {78}{2\over3}$$false
- 2$$ {77}{1\over3}$$false
- 3$$ {78}{1\over3}$$false
- 4$$ {77}{2\over3}$$true
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Answer : 4. "$$ {77}{2\over3}$$"
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? 2046 05d19df8b7619fe30b9d34a61
5d19df8b7619fe30b9d34a61- 167false
- 268false
- 369true
- 471false
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Answer : 3. "69"
Explanation :
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Q: In an examination, 40% of the candidates write their answers in Urdu and the rest in Marathi. The average marks of the candidates writing in Urdu is 74 and the average marks of the candidates writing in Marathi is 77. What are the average marks of all the candidates?
2022 06142c13bca41d4144a0d4d2f
6142c13bca41d4144a0d4d2f- 176.80false
- 275.40false
- 385.80false
- 475.80true
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Answer : 4. "75.80 "
Q: The average age of 24 boys and their teacher is 15 years. When the teacher's age is excluded, the average age decreases by 1 year. The age of the teacher is:
2017 05f2a6089a5ce9779bd291953
5f2a6089a5ce9779bd291953- 140 Yearsfalse
- 241 Yearsfalse
- 338 Yearsfalse
- 439 Yearstrue
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Answer : 4. "39 Years"
Q: A car travel to a place 150 km away at an average speed of 50 km/hr and returns it 30 km/hr. What is the average speed of the whole journey?
2013 15f4f65ee82369c1d61196a3e
5f4f65ee82369c1d61196a3e- 135.5 km/hrfalse
- 237.5 km/hrtrue
- 340.5 km/hrfalse
- 433.5 km/hrfalse
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Answer : 2. "37.5 km/hr"
Q: The average marks obtained by Saloni in four papers is 51, and in the fifth paper she gets 56 marks. Find her new average in all five papers.
2013 0649e7ef046047484bc7db832
649e7ef046047484bc7db832- 151false
- 252true
- 349false
- 450false
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Answer : 2. "52"
Q: The total marks obtained by Abhishek in Zoology, Botany and Chemistry together is 180 more than the marks obtained by him is botany. What are the average marks obtained by him is zoology and Chemistry together?
2001 060acb89a5c11632d824a7861
60acb89a5c11632d824a7861- 190true
- 275false
- 380false
- 4180false
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Answer : 1. "90"
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).
1989 05f479a3809e4377de945ee30
5f479a3809e4377de945ee30- 166true
- 243false
- 367false
- 465false
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