You earn $35,000 per year and are paid bi-weekly. You want to have $500,000 in your 401(k) 35 years from now and you think that your investments can earn 7.75%. Your company will match contributions 60% up to 10% of your salary. How much of your salary should you contribute?

Ask Vanguard or T Rowe Price, we don't do homework for you. It is all about compounding and future value of money.

The strategy I go by is to contribute enough to your 401K to get the maximum company match.