Question

Kris spent $131 on shirts. Blue shirts cost $28 an red cost $15. If he boughht a total of 7 then how many of each kind did he buy?

Answer 1

Call: b=blue and r=red:
Try the system:

`b+r=7`
`28b+15r=131`

[I found `r=5` and `b=2`]