Hi ,everyone.When I entered the following code I got the error massage "Warning, solutions may have been lost." I want to solve x,how can I deal with this problem?Thanks a lot.

restart;
 p := 1730;
 r := .15;
mu := .17;
c := 120000;
k := 60000;
sigma := .2;
y := .89;
CI := 500000000;
with(Statistics);