contestada

Mrs. Kosko left $19.47 on the table in a restaurant after receiving the bill for $16.50. If there was no tax, what percent did she tip? (A) 15% (B) 13% (C) 17% (D) 18%

Respuesta :

She tipped 18 percent . 16.50x0.18= 2.97. 16.50+2.97= 19.47
sdgismep6d4p4
Take the cost of the bill and add the tip percentage of the bill. That is:

[tex]cost = bill + (bill \times\% \: tip)[/tex]

or

[tex]cost = bill(1 + \% \: tip)[/tex]

solve:

[tex]19.47 = 16.50(1 + \% \: tip)[/tex]

[tex] \frac{19.47}{16.50} = 1 + \% \: tip[/tex]

[tex]1.18 = 1 + \% \: tip[/tex]

[tex]\% \: tip = 0.18 = 18\%[/tex]

The tip was 18% of the bill.

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