Timmy estimated he would spend $9 at the candy store. He went a little over-budget and spent $12. What was the percent error?

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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 >:}