Average Questions Practice Question and Answer
8 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:
1835 05f2a90a3a5ce9779bd29b969
5f2a90a3a5ce9779bd29b969- 116true
- 214false
- 320false
- 418false
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Answer : 1. "16 "
Q: a, b, c, d, e, f, g are consecutive even numbers. j, k, l, m, n are consecutive odd numbers. The average of all the numbers is:
1828 05f2a63d3cef453383f1e3e14
5f2a63d3cef453383f1e3e14- 1$${\left(a+b+m+n\over 4 \right)}$$false
- 2$${\left(j+c+n+g\over 4 \right)}$$false
- 3$$3{\left(a+n\over 2 \right)}$$false
- 4$${\left(l+d\over 2 \right)}$$true
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Answer : 4. "$${\left(l+d\over 2 \right)}$$ "
Q: There are 40 boys in a class and average age of the class is 16 years. A boy of 17 years of age is replaced by another one, as a result average age becomes 15.875 years. Find the age of the new boy? 1814 05d19d6201388cd24f0860eff
5d19d6201388cd24f0860eff- 112 yearstrue
- 214.5 yearsfalse
- 315 yearsfalse
- 417 yearsfalse
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Answer : 1. "12 years"
Explanation :
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Q: Ram has 5 daughters. The average age of these 5 sisters is 28 years. The youngest one is 16 years old. What was the average age of the 4 daughters before the youngest one was born?
1812 05df9b6a87c41ef1d193367c5
5df9b6a87c41ef1d193367c5- 128 yearsfalse
- 215 yearstrue
- 331 yearsfalse
- 416 yearsfalse
- 520 yearsfalse
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Answer : 2. "15 years"
Q: 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? 1794 05d19d5011388cd24f0860efa
5d19d5011388cd24f0860efa- 110 yearsfalse
- 211 yearstrue
- 39 yearsfalse
- 48 yearsfalse
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Answer : 2. "11 years"
Explanation :
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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.
1793 05f2a8829a5ce9779bd29853d
5f2a8829a5ce9779bd29853d- 120true
- 225false
- 330false
- 435false
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Answer : 1. "20 "
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:
1791 05f2a8dc6a7bb0b71009fdc07
5f2a8dc6a7bb0b71009fdc07- 170false
- 268false
- 3130false
- 4128true
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Answer : 4. "128 "
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? 1780 05d19cf5a1388cd24f0860eef
5d19cf5a1388cd24f0860eef- 154 yearsfalse
- 255 yearsfalse
- 356 yearstrue
- 458 yearsfalse
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Answer : 3. "56 years "
Explanation :
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