In a jewelry store, rings make up 5/9 of the inventory. earrings make up 4/15 is
of the inventory. how many times greater is the ring inventory than the
earring inventory?

What can you determine about the solutions of this system

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?

I’m still confused on how to work the percentages