Averages (200 Questions with Explanation): Quantitative Aptitude Test

  • Averages
  • 211. The average weight of a class having 25 students is 32 kg. Find the total weight of the class.
   A.) 3200
   B.) 1600
   C.) 1225
   D.) 800

Answer: Option 'D'

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 x 25
= 800
Answer is 800

  • 212. The average weight of a class having 25 students is 32 kg. Find the total weight of the class.
   A.) 3200
   B.) 1600
   C.) 1225
   D.) 800

Answer: Option 'D'

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 x 25
= 800
Answer is 800

  • 213. Find the average of the first 14 natural numbers
   A.) 6.5
   B.) 7.5
   C.) 7
   D.) 8

Answer: Option 'B'

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

  • 214. Find the average of the first 14 natural numbers
   A.) 6.5
   B.) 7.5
   C.) 7
   D.) 8

Answer: Option 'B'

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

  • 215. The average weight of a class having 16 students is 36 kg. Find the total weight of the class.
   A.) 576
   B.) 526
   C.) 496
   D.) 556

Answer: Option 'A'

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

  • 216. The average weight of a class having 16 students is 36 kg. Find the total weight of the class.
   A.) 576
   B.) 526
   C.) 496
   D.) 556

Answer: Option 'A'

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

  • 217. Find the average of the first 70 natural numbers ?
   A.) 31.5
   B.) 35.5
   C.) 34.5
   D.) 35

Answer: Option 'B'

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

  • 218. Find the average of the first 70 natural numbers ?
   A.) 31.5
   B.) 35.5
   C.) 34.5
   D.) 35

Answer: Option 'B'

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

  • 219. Find the average of first 26 multiples of 11.
   A.) 148.5
   B.) 149
   C.) 148
   D.) 149.5

Answer: Option 'A'

Average of first 26 natural numbers = ( n + 1 ) / 2
= ( 26 + 1 ) / 2
= 27 / 2
= 13.5
Average of first 26 multiples of 11 = ( Average of first 26 natural numbers ) × 11
= 13.5 × 11
148.5

  • 220. Find the average of first 26 multiples of 11.
   A.) 148.5
   B.) 149
   C.) 148
   D.) 149.5

Answer: Option 'A'

Average of first 26 natural numbers = ( n + 1 ) / 2
= ( 26 + 1 ) / 2
= 27 / 2
= 13.5
Average of first 26 multiples of 11 = ( Average of first 26 natural numbers ) × 11
= 13.5 × 11
148.5