translate to a system of equations but do not solve.

A non-toxic floor wax can be made from lemon juice and food grade linseed oil. The amount of oil should be twice the amount of lemon juice. How much of each ingredient is needed to make 30 oz of floor wax?

let x represent the number of ounces of lemon juice and y represent the number of ounces of linseed oil.
complete the system of equations.

y =
x+y =​