We need to solve the equation $\frac{p}{10} - 3.1 = 5.4$ for the variable $p$.

1. Problem Description

We need to solve the equation $\frac{p}{10} - 3.1 = 5.4$ for the variable $p$.

2. Solution Steps

First, we add $3.1$ to both sides of the equation:

$\frac{p}{10} - 3.1 + 3.1 = 5.4 + 3.1$

$\frac{p}{10} = 8.5$

Next, we multiply both sides of the equation by $10$:

$10 \cdot \frac{p}{10} = 10 \cdot 8.5$

$p = 85$

3. Final Answer

$p = 85$