A company produces two types of widgets: Widget A and Widget B. It costs $\$25$ to produce each Widget A and $\$15$ to produce each Widget B. The total production cost for a day was $\$225$. The equation $25A+15B=225$ represents the number of Widget A, $A$, and Widget B, $B$, produced that day. If the company produced 5 Widget B's, how many Widget A's did it produce?