[tex]x + 10\%x = 61710[/tex]
[tex]x + \frac{10}{100} x = 61710[/tex]
[tex] \frac{100}{100} x + \frac{10}{100} x = 61710[/tex]
[tex] \frac{110x}{100} = 61710[/tex]
[tex]x = \frac{61710 \times 100}{110} = \frac{61710 \times 10}{11} = 5610 \times 10 = 56100[/tex]