Average Practice Question and Answer
8Q: The average value found for 20 observations was 75. It was noticed later that 97 was read as 79. So, what was the correct average value? 2200 05d19e0457619fe30b9d34a66
5d19e0457619fe30b9d34a66- 175.7false
- 275.8false
- 375.9true
- 475.6false
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Answer : 3. "75.9"
Explanation :
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Q: Find the average of all prime numbers between 30 and 50.
2182 05f3f98a89b782961da39381e
5f3f98a89b782961da39381e- 141.8false
- 238.8false
- 337.8false
- 439.8true
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Answer : 4. "39.8"
Q: The average of three consecutive odd numbers is 12 more than one third of the first of these numbers. What is the last of the three numbers?
2179 05f2a625dcef453383f1e3ce5
5f2a625dcef453383f1e3ce5- 119true
- 216false
- 315false
- 417false
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Answer : 1. "19 "
Q: 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? 2178 05d19cf5a1388cd24f0860eef
5d19cf5a1388cd24f0860eef- 154 yearsfalse
- 255 yearsfalse
- 356 yearstrue
- 458 yearsfalse
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Answer : 3. "56 years "
Explanation :
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Q: What is the average of the following numbers?
38, 92, 45, 25, 60
2158 05da059f500e22578c9e9a658
5da059f500e22578c9e9a65838, 92, 45, 25, 60
- 148false
- 254false
- 356false
- 450false
- 5None of thesetrue
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Answer : 5. "None of these"
Q:Directions: Given table shows the data of population in 5 different parks. Study the data carefully and answer the questions.
If 30 females from each park are above 80 years age then find the average of no. of females who are below or equal to the age of 80 years from all the parks.
2147 0603f62860634b252a6b6647d
603f62860634b252a6b6647d- 1295false
- 2285false
- 3300true
- 4280false
- 5290false
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Answer : 3. "300"
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 ? 2144 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: The average weight of 29 students is 40 kg. If the weight of teacher be included the average weight increased by 400 gms. The weight of the teacher is-
2138 0603dce2ee759ac364c8ba6f3
603dce2ee759ac364c8ba6f3- 150 kgfalse
- 249 kgfalse
- 352 kgtrue
- 455 kgfalse
- 5None of thesefalse
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