What is the ratio of future earnings to present earnings if currently an employee makes $21 a hour and 10 years from now he expects to earn $105 a hour?

what is the ratio of future earnings to present earnings if currently an employee makes $21 a hour and 10 years from now he expects to earn $105 a hour?

Suspecting you work all year round, with no time off and no deductions.

1920 hours per year at $21/hr = $40,320.00

1920 hours per year at $105/hr - $201,600.00

Ratio is 5:1 ten years from now.

Could have made that easier, but I was curious to see salary :)