Respuesta :

Amount spent on vacation=$7920,

Let Mike monthly salary be x,

11% of X= $7920,

[tex] \frac{11}{100} \times x = 7920[/tex]

[tex]11x = 7920 \times 100[/tex]

[tex]x = 792000 \div 11[/tex]

[tex]x = 72000[/tex]

Answer: 720

Step-by-step explanation: divide 7920 into 11 and you will get your answer.