60 liters of salad dressing A is composed of 1 part olive oil and 4 part of blue cheese and 90 liters of salad dressing B is composed of 5 parts olive oil and 2 parts blue cheese. Mr Mixer took M liters of A and mixed it with N liters of B to to produce M+N liters of a salad dressing containing 2 parts olive oil and 3 parts blue cheese. What was the ratio of M:N?

# TJ Prep Problems

TJ test prep practice problems for our students and readers. The problems provide a very small sampling of what Optimal TJ Prep students work with.