A salad dressing recipe calls for 3/4 cup of olive oil for every 1/2 cup of vinegar.
How many cups of vinegar are needed for 2 cups of olive oil ?

Aresearcher believes increased perceived control influence the well-being of residents at a nursing home. to test this , she allowed one group of residents to have control over their daily lies, (where to eat etc) . the other group of 5 residents had these deceisions made by staff. the resident's feelings of well-being were measured on a 10 point scale at the end of a one month trial period. is there a difference on well-being?