How much less than your brother will you have to deposit today is $1,820.78.
First step
Future value = Present value × (1 + interest rate)^number of years
$28,500 = Present value × (1 + 0.105)^14
Present value= $28,500 ÷ 1.105^14
Present value= $28,500 ÷ 4.04642869977
Present value=$7,043.25
Second step
Future value = Present value × (1 + interest rate)^number of years
$28,500 = Present value × (1 + 0.087)^14
Present value= $28,500 ÷ 1.087^14
Present value= $28,500 ÷3.21524163645
Present value=$8,864.03
Third step
Deposit today=-$8,864.03-$7,043.25
Deposit today= $1,820.78
Inconclusion how much less than your brother will you have to deposit today is $1,820.78.
Learn more about present value here:brainly.com/question/15904086