Asnack bar sells two sizes of snack packs. a large snack pack costs 5 dollars. a small snack pack costs 3 dollars. in one day the snack bar sells 60 snack packs for a total of 220 dollars how many small snacks packs did they sell.

X=cost of large snack Y=cost of small snack X+Y=60 5X+3Y=220 To solve for y, solve x+y=60 for x. Subtract y from both sides so you're left with x=-y+60. You now plug in -y+60 for x in the second equation. 5(-y+60)+3y=220 -5y+300+3y=220 -2y+300=220 -2y=-80 Y=40 40 small snack packs is the final answer

The answer for you question is b