<h2>
Answer:</h2>
<u>the density of electrolyte solution is 100 ampere per square meter</u>
<h2>
Step-by-step explanation:</h2>
We know that the Average current density of the solution = 1 ampere per square decimeter and we need to find the average current density of the solution in ampere per square meter. So
<span>20 + 30 × 1
= </span><span>20 + 30
= 50</span>