Could you help me solve

Question

a cook needs to mix a regular ranch dressing containing 45% fat with a light ranch dressing containing 25% fat to result in 5 cups of a dressing containing 29% fat.

 

? Cups of regular dressing

? Cups of light dressing 

 

to make 5 cups

Answer 1

r represents the regular dressing

5 - r represents the light dressing

0.45r + 0.25(5 - r) = 0.29(5)

Can you solve for r and anwer?