Question 78004
a quadruple is just a double double...so double 8.5 is 17...was this a "trick" question??


the "doubling" time for the account is 8.5 yr, so every 8.5 yr the account value is twice what it was 8.5 yr ago


8.5 yr, X 2....17 yr, X 4....25.5 yr, X 8....34 yr, X 16....etc