Answer: He made 110 kilograms of 9.09% salt solution.
Explanation:
Given: Mass of water= 100 kg
Mass of salt= 10 kg
Total mass of the solution: 100kg+10kg= 110 kg
The percent of salt in solution=
![\frac{\text{Mass of salt}}{\text{Mass of the solution}}*100](https://img.qammunity.org/2020/formulas/mathematics/middle-school/3p7uq9nzri4u3kuraxxn13yuhizs1kx6q5.png)
∴The percent of salt in solution
![=(10)/(110)*100=9.09\%](https://img.qammunity.org/2020/formulas/mathematics/middle-school/q451xanclkcaez0fzc8tmgs1if73uexw47.png)
Therefore, He made 110 kilograms of 9.09% salt solution.