The present ages of a father and his son are in the ratio 10:3. If the son is 15years old now, in how many years will the ratio of their ages be 2:1.

Gia opened two savings accounts at two different banks. one account earns an annual 3.4% simple interest, and the other earns half as much. if she deposited $500 in each account, how much total interest will she have earned in 5 years? a. $34.00 b. $25.50 c. $51.00 d. $510.00