Expressing answer in terms of x, y, z?

Question

this should be fairly simple, but i'm a little stuck and here's the question:

sarah buys X pounds of almonds priced at Y dollars per pound. jack spends the same amount of money priced at Z dollars per pound. how many pounds of walnuts did jack purchase? express your answer in terms of x, y, z.

i think i have it, but i want to make sure! thanks =)

Answer 1

iv got Y=X+Z