They rented out 5 self-propelled mowers and 20 riding mowers.
Data;
- Total number of tool rented out = 25
- Cost of tools rented = $900
<h3>System of Equations</h3>
To solve this problem, we have to write a system of equations to represent the problem.
since we have
- x = self - propelled mower
- y = riding mowers
Let's write equations with these variables.

From equation (i)

Put equation (iii) into equation (ii)

Let's substitute the value of y into equation(i)

From the calculations above, they rented 5 self-propelled mowers and 20 riding mowers.
Learn more on system of equations here;
brainly.com/question/13729904