The mean weight per student in a group of 7 students is 55 kg. The individual weights of 6 of them (in kg) are 52, 54, 55, 53, 56 and 54. Find the weight of the seventh student.

Explanation

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

### Step-by-Step Solution:

1. **Understand the Mean Formula**:
The mean (average) weight per student is given by the formula:
\[
\text{Mean} = \frac{\text{Sum of all weights}}{\text{Number of students}}
...