Suppose that we change this part of the example
slightly to use a variable rather than the constant
100, is this correct?
begin
let my-amount := 100
let (my-balance, my-deposit, my-calc-interest)
= make-account(my-amount, 3);
my-deposit(50);
my-calc-interest();
values (my-balance(), my-amount);
end;
=> 154.5, 154.5
-- Doug