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Grace was out at a restaurant for dinner when the bill came. Her dinner came
to $33. After adding in a tip, before tax, she paid $38.61. Find the percent tip.

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Answer:

Based on the given conditions, formulate: (38.6-33)÷33

Calculate the sum or difference:5.61/33

Convert decimal to fraction:5.61/100/33

Divide a fraction by multiplying its reciprocal:561/100 × 1/33

Cross out the common factor:17/100

Rewrite a fraction with denominator equals 100 to a percentage:17%

Answer: 17%

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