Answer: The concentration of the mixture is 0.5 p % .
Explanation:
Given: 5 gallons of p% boric acid is mixed with 5 gallons of water.
Amount of boric acid = p% of 5 gallons
![=(p)/(100)*5\text{ gallons}= 0.05p\text{ gallons}](https://img.qammunity.org/2021/formulas/mathematics/high-school/9skf6iy5gzha5lnxdw7ot42buow8zy24ly.png)
Total solution : 5 +5 = 10 gallons
then, the concentration of the mixture =
![\frac{\text{Amount of boric acid in solution}}{\text{Total solution}}*100](https://img.qammunity.org/2021/formulas/mathematics/high-school/474mbimhd9wo5me18lob35s9lxh7litkmq.png)
![=(0.05p)/(10)*100\\\\=0.5p](https://img.qammunity.org/2021/formulas/mathematics/high-school/xud0d0i05q03hirz32m3pczu7dncz5qpd2.png)
Hence, the concentration of the mixture is 0.5 p % .