hilda bought 4 orders of french fries at $0.67 each, 3 hamburgers at $1.28 each, and 4 shakes at 2.25...

hilda bought 4 orders of french fries at $0.67 each, 3 hamburgers at $1.28 each, and 4 shakes at 2.25 each.she paid 8.25% tax on the whole order.what other information is necessary to find Hild's correct change