Fiona's Fashion Store is world renowned for its buttoned uniforms.
A collection of
36
3636 shirts and
42
4242 jackets contains
842
842842 buttons. A collection of
6
66 shirts and
7
77 jackets contains
137
137137 buttons. Each shirt has the same number of buttons, and each jacket has the same number of buttons.
How many buttons are there in a Fiona's Fashion shirt, and how many buttons are there in a jacket?