Calculate Time For Loan Payment - Writing Java From Pseudocode

calculate how long it would take to pay off a loan of 500 pounds if there was 10% interest monthly, and 100 pounds was paid each month. This code is in a pseudocode,

set months = 1
set balance = 500
set totalpaid = 0;
while balance > 100
balance = balance - 100;
set interest = balance * 0.1
balance = balance + interest
totalpaid = totalpaid + 100
months = months + 1
endwhile
totalpaid = totalpaid+balance
display "you paid "+totalpaid
display "It took you "+months+" months"