Average Questions Practice Question and Answer
8 4 Answer : 1. "12 years"
4 Answer : 4. "2021"
4 Answer : 3. "40"
4 Answer : 1. "100"
4 Answer : 2. "Rs.310"
4 Answer : 4. "4"
4 Answer : 4. "60"
4 Answer : 1. "264"
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? 1384 05d19d6201388cd24f0860eff
5d19d6201388cd24f0860eff- 112 yearstrue
- 214.5 yearsfalse
- 315 yearsfalse
- 417 yearsfalse
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- SingleChoice
Answer : 1. "12 years"
Explanation :
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Q: The average of 5 consecutive odd numbers A, B, C, D and E is 45. What is the product of B and D? 1045 05d19d71f1388cd24f0860f05
5d19d71f1388cd24f0860f05- 12107false
- 22205false
- 31935false
- 42021true
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Answer : 4. "2021"
Explanation :
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Q: The average of nine numbers is 30. The average of first five numbers is 25 and that of for last three numbers is 35, then what will be sixth number? 1064 05d19d83d1388cd24f0860f0b
5d19d83d1388cd24f0860f0b- 120false
- 230false
- 340true
- 450false
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Answer : 3. "40"
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? 1225 05d19d8bd1388cd24f0860f10
5d19d8bd1388cd24f0860f10- 1100true
- 2120false
- 3150false
- 4140false
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Answer : 1. "100"
Explanation :
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Q: The average daily income of A, B and C is Rs.450. If the average daily income of A and B is Rs.400. B and C is Rs.430; then the daily income of B will be- 1574 05d19db257619fe30b9d3459e
5d19db257619fe30b9d3459e- 1Rs.300false
- 2Rs.310true
- 3Rs.415false
- 4Rs.425false
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Answer : 2. "Rs.310"
Explanation :
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Q: The average of first three numbers is three times of the fourth number. If the average of all four numbers is 5, then find the fourth number. 1110 05d19dc981388cd24f0860f15
5d19dc981388cd24f0860f15- 14.5false
- 25false
- 32false
- 44true
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Answer : 4. "4"
Explanation :
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Q: The average of three numbers is 40. First of them is two times of the seconds and the second is three time of the third. So, what is the difference between the largest and smallest number? 1128 05d19dded7619fe30b9d345a3
5d19dded7619fe30b9d345a3- 130false
- 236false
- 346false
- 460true
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Answer : 4. "60"
Explanation :
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Q: The average of three numbers is 154. The first number is double of the second number and the second is double of the third one. The first number is 3053 05d19dec87619fe30b9d345a8
5d19dec87619fe30b9d345a8- 1264true
- 2132false
- 388false
- 466false
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Answer : 1. "264"
Explanation :
let x y and z is three number
x:y
2:1
y:z
2:1
then we can find x:y:z is will be 4:2:1
Then 7/3=154
1=66
then the x will be=66*4=264
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