- 211. The average weight of a class having 25 students is 32 kg. Find the total weight of the class.

**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.

**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

**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

**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.

**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.

**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 ?

**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 ?

**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.

**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.

**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**

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