The average weigth of 25 students is 16 kg. The average weight of the first 12 students is 14 kg and of the last 12 students is 17 kg . Find the weight of the thirteenth students.

Options

A. 29 kg
B. 22 kg
C. 27 kg
D. None of these

Explanation

To find the weight of the 13th student, we can follow these steps:

### Step 1: Calculate the total weight of all 25 students.
The average weight of 25 students is given as 16 kg.

\[ \text{Total weight of 25 students} = \text{Average weight} \times \text{Number of students} = 16 \, \text{kg} \times 25 = 400 \, \text{kg} \]
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