Hannah serves tables at a restaurant. The first table she served on a Monday paid her $89.70. The bill amount was $78.00, and the rest was Hannah's tip. What percentage of the bill was Hannah tipped?

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Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,