What percent of yellow tint is in the new mixture?

Question

A mixture of 50 liters of paint is 25% red tint, 30% yellow tint and 45% water.

7 liters of yellow tint are added to the original mixture.

Answer 1

red=12.5

yellow=15+7=22

water=22.5

50=100%

Now the figure is 22/57=38.6%