Question

At a school supply store, binders cost $5 and pencil pouches cost $2. In one day, 42 of these items are sold for total sales of $144. Which system represents this (b represents binders and p represents pencil pouches), and how many binders were sold?

Answer 1

I think I got this down now :D

42 = b + p
144 = 5b + 2p

p = 42-b

144 = 5b + 2(42-b)
144 = 5b + 84 - 2b
60 = 3b
...

Answer 2

haha thanks