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Answer :

Answer:

tip shold be 7.07

Step-by-step explanation:

70.70 x .10

Answer:

$77.77

Step-by-step explanation:

Given:

$70.70

10% tip

let x = total amount she needs to pay

x = $70.70 + (10%)($70.70)

x = $70.70 + $7.07

x = $77.77