How much of each brand should she use?

Question

A chef is going to use a mixture of two brands of Italian dressing. The first brand contains 6% vinegar, and the second brand contains 11% vinegar. The chef wants to make 240 milliliters of a dressing that is 8% vinegar. How much of each brand should she use?

Answer 1

v represents the amount of 6%

240 - v represents the amount of 11%

 

0.06v + 0.11(240 - v) = 0.08(240)

 

Can you solve for v and answer?