Average Practice Question and Answer
8Q: Average age of 12 men is 56 years. Two members of 60 years and 52 years die. What will the average age of the remaining members? 1471 05d19cf5a1388cd24f0860eef
5d19cf5a1388cd24f0860eef- 154 yearsfalse
- 255 yearsfalse
- 356 yearstrue
- 458 yearsfalse
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Answer : 3. "56 years "
Explanation :
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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?
1466 05f5afb19dc518b408a418a15
5f5afb19dc518b408a418a15- 1false
- 2false
- 3false
- 4true
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Answer : 4. "
Q: The twice of sum of the ages of a father and his son is 8 times the age of the son. If the average age of the father and the son is 30 years, what is father's age ? 1461 05b5cc6c9e4d2b4197774df83
5b5cc6c9e4d2b4197774df83- 142 yrsfalse
- 245 yrstrue
- 336 yrsfalse
- 438 yrsfalse
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Answer : 2. "45 yrs"
Explanation :
Answer: B) 45 yrs Explanation: Let father's age be x year and son's age be y year. According to question, 2(x+y) = 8y _______(I) and (x+y)/2 = 30 => x+y = 60 years__________(II) From equation (I) and (II) 8 y = 120 y = 15 years, Hence x = 45 years.
Q: When the average age of husband, wife and their son was 42 years, the son got married and a child was born just one year after marriage. When the child turned to be 5 years, the average age of the family becomes 36 years. What was the age of daughter-in-law at the time of marriage?
1459 05f2cfeaebe9f31290fb86c32
5f2cfeaebe9f31290fb86c32- 124 yearfalse
- 228 yearfalse
- 330 yearfalse
- 425 yeartrue
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Answer : 4. "25 year"
Q: What is the average of the following numbers?
38, 92, 45, 25, 60
1451 05da059f500e22578c9e9a658
5da059f500e22578c9e9a65838, 92, 45, 25, 60
- 148false
- 254false
- 356false
- 450false
- 5None of thesetrue
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Answer : 5. "None of these"
Q: Find the average of all prime numbers between 30 and 50.
1451 05f3f98a89b782961da39381e
5f3f98a89b782961da39381e- 141.8false
- 238.8false
- 337.8false
- 439.8true
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Answer : 4. "39.8"
Q: In a certain year, the average monthly income of a person was Rs.3,400. For the first eight months of the years, his average monthly income was Rs. 3,160 and for the last five months, it was Rs.4,120. His income in the eighth month of the year was:
1436 05dcba01d45ad6b59c82d7884
5dcba01d45ad6b59c82d7884- 1Rs . 3,160false
- 2Rs . 5,080true
- 3Rs . 15,520false
- 4Rs . 5, 520false
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Answer : 2. "Rs . 5,080 "
Q: The average weight of Sudesh, Jyothi and Ritu is 89 kg. If the average weight of Sudesh and Jyothi be 98 kg and that of Jyothi and Ritu be 83 kg, then the weight of Jyothi is
1434 05f3f922654900c5349e3813e
5f3f922654900c5349e3813e- 158false
- 256false
- 366false
- 495true
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