Each bag of cereal should contain 350 g a box with selected at random and wade 342 g what is the percent error

answer ^^

question: Royston’s car had gallons of gas at the start of the trip. During the trip, he stopped at a gas station and refueled the car with gallons. If the car consumed gallons of gas during the trip, there are still *blank* gallons of gas remaining in the tank.?

hope it helps if it's not what your looking for am sorry >:}