Answer:
$693.16
Explanation:
Calculation to determine How much less than your brother will you have to deposit today
Using this formula
FV= Present value × (1 + interest rate)^number of years
Let plug in the formula
First step
$28,000 = Present value × (1 + 0.112)^13
PV= $28,000 ÷ 1.112^13
PV= $28,000 ÷ 3.97522975235
PV= $7,043.618
Second step
$28,000 = Present value × (1 + 0.104)^13
PV= $28,000 ÷ 1.104^13
PV= $28,000 ÷ 3.61907808993
PV= $7,736.777
Now let calculate how much less than your brother will you have to deposit today
Deposit today= $7,736.777-$7,043.618
Deposit today= $693.159
Deposit today=$693.16 (Approximately)
Therefore How much less than your brother will you have to deposit today will be $693.16