How much will each investor have at age of 65?

Investor A Opening an IRA at age 19. For seven consecutive periods he puts $2,000 in his IRA at an average growth rate of 10%. After seven years this fellow makes NO MORE contributions - he's finished. Investor B Making no contributions until age 26 (this is the age when investor A was finished with his contributions). Then B continues faithfully to contribute $2,000 every year until he's 65 (at the same theoretical 10% rate)