She bought 120 sodas for $1.25 each, 30 pizzas for $12.50 each and 120 packs of skittles for $2 ea

[math_celebrity]

She bought 120 sodas for $1.25 each, 30 pizzas for $12.50 each and 120 packs of skittles for $2 each.

Total Cost = Soda Cost + Pizza Cost + Skittle Cost

Cost = Quantity * Price, so we have:
Total Cost = 120 * 1.25 + 20 * 12.50 + 120 * 2
Total Cost = 150 + 250 + 240
Total Cost = $640