Question

A recipe for lime salad dressing calls for 1/4 cup lime juice and 3/4 cup olive oil. How much lime juice would you use with 1 cup olive oil?

Answer 1

OK you must establish a relation of  the two first quantities, it means  1/4 lime :  3/4 oil, then with  1 cup oil  it will be x quantity of lime

1/4 cup lime____3/4 cup oil

  x_________1 cup oil             x = 1*1/4÷3/4 ,  x= 1/3  lime juice