The percentage of yellow tint in the new mixture will be 39.1304...%
Explanation
A mixture of 60 liters of paint is 25% red tint, 30% yellow tint and 45% water.
So, the amount of yellow tint [tex]=(60*0.30)liters= 18[/tex] liters.
Now, 9 liters of yellow tint are added to the original mixture. So, the total amount of yellow tint in the new mixture will be: [tex](18+9)liters= 27[/tex] liters.
And the total amount of the new mixture will be: [tex](60+9)liters= 69[/tex] liters.
So, the percentage of yellow tint in the new mixture [tex]=\frac{27}{69}\times 100\% = 39.1304... \%[/tex]
