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Average and Age Questions

461. Find the average of the first 56 natural numbers




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Correct Ans:28.5
Explanation:
Solution is
Average of the first n natural numbers = (n + 1) / 2
Average of the first 56 natural numbers = (56 + 1) / 2
= 57 / 2
= 28.5
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462. The average weight of a class having 25 students is 32 kg. Find the total weight of the class.




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Correct Ans:800
Explanation:
Solution is
Given, Average weight = 32 kg
No.of students = 25

Average = Total Quantity / No. of Quantity
=> Total Weight of the class = Average weight x No. of Students
= 32 * 25
= 800
Answer is 800
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463. Find the average of the first 14 natural numbers




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Correct Ans:7.5
Explanation:
Solution is :
Average of the first n natural numbers = ( n + 1 ) / 2
Average of the first 14 natural numbers = ( 14 + 1 ) / 2
= 15 / 2
= 7.5
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464. The average weight of a class having 16 students is 36 kg. Find the total weight of the class.




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Correct Ans:576
Explanation:
Solution is :
Given, average weight = 36 kg
No. of students = 16
Average = Total Quantity / No. of Quantity
=> Total weight of the class = Average weight x No. of Students
= 36 * 16
= 576 kg
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465. Find the average of the first 70 natural numbers ?




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Correct Ans:35.5
Explanation:
Solution is :
Average of the first n natural numbers = ( n + 1 ) / 2
Average of the first 70 natural numbers = ( 70 + 1 ) / 2
= 71 / 2
= 35.5
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466. Find the average of first 26 multiples of 11




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Correct Ans:148.5
Explanation:
Solution is:
Average of first 26 natural numbers = ( n + 1 ) / 2
= ( 26 + 1 ) / 2
= 27 / 5
= 13.5
Average of first 26 multiples of 11 = ( Average of first 26 natural numbers ) * 11
= 13.5 * 11
= 148.5
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467. The average weight of a class having 14 students is 36 kg. Find the total weight of the class.




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Correct Ans:504
Explanation:
Solution is :
Given, Average weight of the class = 36 kg
No. of students in the class = 14
Average = Total Quantity / No. of Quantity
=> Total weight of the class = Average weight x No. of students

= 36 * 14
= 504
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468. Find the average of first 17 multiples of 3




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Correct Ans:27
Explanation:
Solution is
Given

Average of first 17 natural numbers= (n + 1 ) / 2
=(18 / 2 )
= 9
Average of first 17 multiples of 3 =(Average of first 17 natural numbers) x 3
= 9 x 3
= 27
Answer is 27


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469. The average weight of 14 class having a students is 36 kg. Find the total weight of the class.




SHOW ANSWER
Correct Ans:504
Explanation:
Solution is :
Total quantity = Average x No. of Quantity
Total weight = Average weight x No.of students
= 36 x 14
= 504 kg
Workspace



470. Find the average of first 30 multiples of 8




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Correct Ans:124
Explanation:
Solution is :
Average of first 30 natural numbers = ( n + 1 ) / 2
= ( 30 + 1 ) / 2
= 31 / 2
= 15.5
Average of first 30 multiples of 8 = ( Average of first 30 natural numbers ) * 8
= 15.5 * 8
= 124
Workspace



471. Find the average of first 26 multiples of 11




SHOW ANSWER
Correct Ans:148.5
Explanation:
Solution is:
Average of first 26 natural numbers = ( n + 1 ) / 2
= ( 26 + 1 ) / 2
= 27 / 5
= 13.5
Average of first 26 multiples of 11 = ( Average of first 26 natural numbers ) * 11
= 13.5 * 11
= 148.5
Workspace



472. The average weight of a class having 12 students is 30 kg. Find the total weight of the class.




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Correct Ans:360
Explanation:
Solution is
[ Total quantity = Average x No.of quantity ]

= 12 x 30
= 360
Answer is 360
Workspace



473. Find the average of the first 70 natural numbers




SHOW ANSWER
Correct Ans:35.5
Explanation:
Solution is
Average of n natural numbers = (n + 1 ) / 2
= ( 70 + 1 ) / 2
= 71 / 2
= 35.5
Answer is 35.5
Workspace



474. The average weight of a class having 14 students is 44 kg. Find the total weight of the class.




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Correct Ans:616
Explanation:
Solution is
Average = Total Quantity / No. of Quantity
Total quantity = Avg x No. of Quantity

Total quantity = 14 x 44
= 616
Answer is 616
Workspace



475. Find the average of the first 27 natural numbers




SHOW ANSWER
Correct Ans:14
Explanation:
Solution is
Average of n natural numbers =( n + 1 ) / 2
Average of 27 natural numbers = ( 27 + 1 ) / 2
= 28 / 2
= 14
Answer is14
Workspace



476. The average weight of 16 class having a students is 36 kg. Find the total weight of the class.




SHOW ANSWER
Correct Ans:576
Explanation:
Average = Total Quantity / No. of Quantity Total quantity = Avg x No. of Quantity Total quantity = 16 x 36 = 576
Workspace



477. Find the average of the first 27 natural numbers




SHOW ANSWER
Correct Ans:14
Explanation:
Solution is
Average of n natural numbers =( n + 1 ) / 2
Average of 27 natural numbers = ( 27 + 1 ) / 2
= 28 / 2
= 14
Answer is14
Workspace



478. The average weight of a class having 16 students is 36 kg. Find the total weight of the class.




SHOW ANSWER
Correct Ans:576
Explanation:
Solution is
Given :
Average weight of a class having 16 students is 36 kg
Average = Total Quantity / No. of Quantity
Total quantity = Avg x No. of Quantity

Total quantity = 16 x 36 = 576
Answer is 576
Workspace



479. Find the average of first 17 multiples of 3




SHOW ANSWER
Correct Ans:27
Explanation:
Solution is
Given

Average of first 17 natural numbers= (n + 1 ) / 2
=(18 / 2 )
= 9
Average of first 17 multiples of 3 =(Average of first 17 natural numbers) x 3
= 9 x 3
= 27
Answer is 27


Workspace



480. Find the average of the first 56 natural numbers




SHOW ANSWER
Correct Ans:28.5
Explanation:
Solution is
Average of n natural numbers = (n + 1) / 2
= (56 + 1) / 2
= 57 / 2
= 28.5
Answer is 28.5
Workspace



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