You are selling small and large stickers to fundraise for the eSports team. You collected $144 total and sold 28 candles. The small stickers were $4 each and the large stickers were $6 each. How many types of each sticker did you sell?

What happened to the candles ?

Assuming you meant stickers,

let number of small stickers be x
let number of large stickers be y

x + y = 28 or y = 28-x

4x + 6y = 144
4x + 6(28-x) = 144

solve for x, then sub into y = 28-x to find y